C Plus Plus Exam: True Or False Quiz!

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  • 1/96 Questions

    Programmers use a variety of special languages, called programming languages, to communicate with the computer.  

    • True
    • False
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About This Quiz

This C++ True or False quiz assesses knowledge on programming languages and concepts, focusing on the unique aspects and structures of C++.

C Plus Plus Exam: True Or False Quiz! - Quiz

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  • 2. 

    You use the selection structure when you want a program to make a decision or comparison and then select one of two paths, depending on the result of that decision or comparison.  

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The selection structure is used in programming when there is a need to make a decision or comparison and then choose one of two paths based on the result of that decision or comparison. This allows the program to execute different sets of instructions depending on certain conditions. Therefore, the statement "True" is correct as it accurately describes the purpose and functionality of the selection structure.

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  • 3. 

    The binary number system uses only the two digits 0 and 1.  

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The binary number system is a base-2 number system, which means it only uses two digits, 0 and 1, to represent numbers. In this system, each digit represents a power of 2, and the value of a number is determined by the presence or absence of these digits. Therefore, the statement that the binary number system uses only the two digits 0 and 1 is true.

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  • 4. 

    You desk-check an algorithm to verify that it is not missing any steps and that the existing steps are correct and in the proper order.  

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Desk-checking is a method of manually reviewing an algorithm or program to ensure that all steps are included and in the correct order. It involves mentally executing the algorithm step by step, simulating the inputs and expected outputs. By doing so, any missing steps or errors in the existing steps can be identified and corrected. Therefore, the statement "True" is the correct answer as desk-checking is indeed used to verify the completeness and correctness of an algorithm.

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  • 5. 

    The file containing the source code is called the source file.  

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The source file is the file that contains the source code, which is the human-readable version of a computer program. It typically has a file extension such as .cpp for C++ or .java for Java. Therefore, it is correct to say that the file containing the source code is called the source file.

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  • 6. 

    If different sections of a program need to perform the same task, it is more efficient to enter the appropriate code once, in a function, and then call the function to perform its task when needed.  

    • True

    • False

    Correct Answer
    A. True
    Explanation
    When different sections of a program need to perform the same task, it is more efficient to enter the appropriate code once in a function and then call the function when needed. This avoids code duplication and allows for easier maintenance and updates. By encapsulating the task within a function, it can be reused multiple times without having to rewrite the code each time. This improves code readability, reduces the chances of errors, and enhances the overall efficiency of the program. Therefore, the statement is true.

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  • 7. 

    You use the selection structure when you want a program to make a decision or comparison and then select one of two paths, depending on the result of that decision or comparison.  

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The selection structure is used in programming when you want to create a decision-making process. It allows the program to compare different values or conditions and then choose one of two paths based on the result of that comparison. This is done using conditional statements such as if-else or switch-case. Therefore, the statement "You use the selection structure when you want a program to make a decision or comparison and then select one of two paths, depending on the result of that decision or comparison" is true.

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  • 8. 

    Functions allow the programmer to avoid duplicating code in different parts of a program.  

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Functions are reusable blocks of code that can be called multiple times in a program. By using functions, programmers can write a piece of code once and then call it whenever needed, instead of duplicating the same code in different parts of the program. This helps in reducing redundancy, improving code readability, and making the program more modular and maintainable. Therefore, the statement "Functions allow the programmer to avoid duplicating code in different parts of a program" is true.

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  • 9. 

    Eliminating errors at the pencil and paper stage makes it much easier to produce a correct program in the later steps of the problem-solving process.  

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Eliminating errors at the pencil and paper stage refers to thoroughly planning and designing a program on paper before actually coding it. This allows for identifying and correcting any potential mistakes or issues before starting the coding process. By doing so, it becomes easier to produce a correct program in the later steps of problem-solving as the foundation and structure of the program have already been carefully thought out. This approach saves time and effort in the long run, as it reduces the need for extensive debugging and troubleshooting during the coding phase.

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  • 10. 

    In a flowchart, the switch diamond contains an expression whose value determines which path is chosen.  

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The switch diamond in a flowchart contains an expression that evaluates to a certain value. This value determines which path or branch of the flowchart is chosen to be executed next. If the expression evaluates to a true or valid value, then the corresponding path is chosen. If it evaluates to false or invalid, a different path is chosen. Therefore, the statement that the switch diamond contains an expression whose value determines which path is chosen is true.

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  • 11. 

    You can include as many case clauses as necessary in a switch statement.  

    • True

    • False

    Correct Answer
    A. True
    Explanation
    A switch statement is a control flow statement that allows a program to evaluate an expression and execute different code blocks based on different possible values of the expression. The case clauses in a switch statement are used to define the different possible values of the expression and the corresponding code blocks to be executed. Since there can be multiple possible values and code blocks, it is necessary to include as many case clauses as needed in a switch statement. Therefore, the given statement is true.

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  • 12. 

    High-level languages are a vast improvement over machine and assembly languages because they allow the programmer to use instructions that more closely resemble the English language.  

    • True

    • False

    Correct Answer
    A. True
    Explanation
    High-level languages are indeed a significant improvement over machine and assembly languages because they enable programmers to write instructions that are more similar to the English language. This makes the code easier to read, write, and understand. High-level languages use keywords and syntax that are familiar to humans, making it simpler for programmers to translate their ideas into code. This abstraction allows for faster development and reduces the likelihood of errors. Therefore, the statement is true.

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  • 13. 

    Some algorithms require selection structures that are capable of choosing from several alternatives.  

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Some algorithms require selection structures that are capable of choosing from several alternatives. This means that in certain situations, the algorithm needs to make a decision based on certain conditions or criteria. By using selection structures, the algorithm can evaluate these conditions and choose the appropriate alternative to proceed with. This is why the statement "Some algorithms require selection structures that are capable of choosing from several alternatives" is true.

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  • 14. 

    Each variable you declare in a program has both a value and a unique address that represents the location of the variable in the computer’s internal memory.  

    • True

    • False

    Correct Answer
    A. True
    Explanation
    In programming, each variable is assigned a value and also has a unique address that indicates its location in the computer's memory. This allows the program to access and manipulate the variable's value when needed. Therefore, the statement "Each variable you declare in a program has both a value and a unique address that represents the location of the variable in the computer's internal memory" is true.

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  • 15. 

    In C++, you use the if statement to code the if and if/else forms of the selection structure.  

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The if statement in C++ is used to implement both the if and if/else forms of the selection structure. It allows the program to make decisions based on certain conditions. The if statement evaluates a condition and executes a block of code if the condition is true. The if/else form allows the program to execute different blocks of code based on whether the condition is true or false. Therefore, the statement "True" is correct as it accurately describes the usage of the if statement in C++.

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  • 16. 

    A class definition contains two sections: a declaration section and an optional implementation section.  

    • True

    • False

    Correct Answer
    A. True
    Explanation
    A class definition typically consists of two sections: a declaration section and an optional implementation section. The declaration section includes the class name, attributes, and methods, while the implementation section contains the actual code for the methods. This separation allows for better organization and abstraction in object-oriented programming. Therefore, the statement is true.

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  • 17. 

    Programs written in a high-level language can be used in many different types of computers.  

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Programs written in a high-level language are designed to be portable and can be used on different types of computers. High-level languages are designed to be independent of the specific hardware or operating system, allowing the code to be easily executed on different platforms. This portability is one of the main advantages of high-level languages, as it saves time and effort by allowing developers to write code once and run it on multiple systems. Therefore, the statement "Programs written in a high-level language can be used in many different types of computers" is true.

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  • 18. 

    Before you begin the desk-check, you first choose a set of sample data for the input values, which you then use to manually compute the expected output values.  

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Before conducting a desk-check, it is necessary to select a set of sample data for the input values. This set of data is used to manually calculate the expected output values. This process allows for a comparison between the expected and actual outputs, helping to identify any errors or inconsistencies in the program. Therefore, the statement is true.

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  • 19. 

    A local variable can be used only within the statement block in which it is declared.  

    • True

    • False

    Correct Answer
    A. True
    Explanation
    A local variable is a variable that is declared within a specific block of code, such as a function or a loop. It is only accessible and can only be used within that block of code. Once the block of code is exited, the local variable is no longer accessible. Therefore, the statement that a local variable can be used only within the statement block in which it is declared is true.

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  • 20. 

    When writing a do-while loop in C++, if more than one statement needs to be processed, the statements must be entered as a statement block.  

    • True

    • False

    Correct Answer
    A. True
    Explanation
    In C++, when using a do-while loop, if there are multiple statements that need to be processed, they must be enclosed within a statement block. This is because the do-while loop executes the statements within the block repeatedly until the condition specified in the while statement becomes false. Without a statement block, only the first statement after the do keyword would be considered part of the loop, and the subsequent statements would be executed only once after the loop terminates. Therefore, in order to ensure that all the statements are processed repeatedly, a statement block is necessary.

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  • 21. 

    Programmers refer to the process of verifying that the input data is within the expected range as data validation.  

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Programmers refer to the process of verifying that the input data is within the expected range as data validation. This means that programmers check if the input data meets certain criteria, such as being within a specific range or format, before using it in a program. By validating the data, programmers can ensure that the program functions correctly and does not encounter errors or unexpected behavior due to invalid input. Therefore, the statement "Programmers refer to the process of verifying that the input data is within the expected range as data validation" is true.

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  • 22. 

    In a repetition structure, when the loop condition evaluates to false, the computer skips over the loop instructions, and processing continues with the instruction immediately following the end of the loop.  

    • True

    • False

    Correct Answer
    A. True
    Explanation
    In a repetition structure, the loop condition is checked before each iteration of the loop. If the condition evaluates to false, it means that the loop should not be executed anymore. In this case, the computer will skip over the loop instructions and continue with the instruction immediately following the end of the loop. This allows the program to move on to the next task or instruction after the loop has finished executing. Therefore, the given statement is true.

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  • 23. 

    When you pass a literal constant, a keyword, a named constant, or a variable’s value to a function, the function stores the value it receives in a memory location.  

    • True

    • False

    Correct Answer
    A. True
    Explanation
    When passing a literal constant, a keyword, a named constant, or a variable's value to a function, the function stores the value it receives in a memory location. This is because functions need to access and manipulate the values they receive as parameters, and storing them in memory allows for easy retrieval and modification. Therefore, the statement is true.

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  • 24. 

    The objects used in an object-oriented program can take on many different forms.  

    • True

    • False

    Correct Answer
    A. True
    Explanation
    In object-oriented programming, objects are instances of classes and can have different forms or types. This means that objects can be created from different classes, each with its own set of properties and behaviors. This allows for flexibility and reusability in programming, as objects can be easily created and modified to suit different needs. Therefore, the statement "The objects used in an object-oriented program can take on many different forms" is true.

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  • 25. 

    You should perform several desk-checks, using different data, to make sure that the program is correct.  

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Performing desk-checks using different data is a recommended practice to ensure the correctness of a program. By testing the program with various inputs, it helps identify any potential errors or bugs in the code. This process allows the programmer to verify that the program produces the expected results and behaves as intended. Therefore, the statement "You should perform several desk-checks, using different data, to make sure that the program is correct" is true.

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  • 26. 

    Names in C++ are case sensitive.  

    • True

    • False

    Correct Answer
    A. True
    Explanation
    In C++, names are case sensitive, which means that the uppercase and lowercase letters in a name are considered distinct. This means that "variable" and "Variable" are two different identifiers in C++. Therefore, if we declare a variable with a lowercase letter and try to access it using an uppercase letter, the compiler will treat it as a different variable and may result in an error. Hence, the correct answer is true.

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  • 27. 

    A repetition structure can be either a pretest loop or a posttest loop.  

    • True

    • False

    Correct Answer
    A. True
    Explanation
    A repetition structure is a programming construct that allows a set of instructions to be repeated multiple times. It can be either a pretest loop or a posttest loop. A pretest loop checks the condition before executing the loop, while a posttest loop checks the condition after executing the loop. Therefore, the statement "A repetition structure can be either a pretest loop or a posttest loop" is true.

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  • 28. 

    The creation of a good class, which is one whose objects can be used in a variety of ways by many different programs,requires a lot of time, patience, and planning.  

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Creating a good class that can be used in various ways by different programs is indeed a time-consuming and meticulous process. It requires careful consideration of the class's design, functionality, and potential use cases. The class should be well-structured, modular, and adaptable to different programming scenarios. Additionally, thorough planning and attention to detail are necessary to ensure the class meets the requirements and expectations of various programs. Therefore, the statement that the creation of a good class requires time, patience, and planning is true.

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  • 29. 

    You should test an algorithm with invalid data because users sometimes make mistakes when entering data.  

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Testing an algorithm with invalid data is important because it allows us to identify and handle any errors or exceptions that may occur when users make mistakes while entering data. By testing with invalid data, we can ensure that the algorithm can handle these unexpected inputs gracefully and provide appropriate feedback or error messages to the user. This helps to improve the overall user experience and prevent potential issues or crashes in the system.

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  • 30. 

    The data type and position of each formal parameter in the parameterList of a function call must agree with the data type and position of its corresponding actual argument.  

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The explanation for the given correct answer is that in a function call, the data type and position of each formal parameter (parameters defined in the function's signature) must match with the data type and position of its corresponding actual argument (arguments passed to the function). This ensures that the values being passed to the function are of the correct type and in the correct order, allowing the function to work correctly. If there is a mismatch in data type or position, it can lead to errors or unexpected behavior in the program.

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  • 31. 

    Large and complex programs are typically written by a team of programmers.  

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Large and complex programs require a significant amount of work and expertise to develop, which is why they are typically written by a team of programmers. This allows for the workload to be divided among multiple individuals, each with their own specialized skills and knowledge. Additionally, collaboration within a team can lead to better problem-solving, improved code quality, and faster development. Therefore, it is true that large and complex programs are typically written by a team of programmers.

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  • 32. 

    When writing a procedure-oriented program, the programmer concentrates on the major tasks that the program needs to perform.  

    • True

    • False

    Correct Answer
    A. True
    Explanation
    In a procedure-oriented program, the programmer focuses on breaking down the program into smaller tasks or procedures. These procedures are designed to perform specific actions or tasks within the program. By concentrating on these major tasks, the programmer can organize and structure the program in a way that makes it easier to understand and maintain. This approach allows for better code reusability and modularity, as each procedure can be used in multiple parts of the program. Therefore, the statement "When writing a procedure-oriented program, the programmer concentrates on the major tasks that the program needs to perform" is true.

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  • 33. 

    The ability to use an object for more than one purpose saves programming time and money—an advantage that contributes to the popularity of object-oriented programming.  

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The statement is true because object-oriented programming allows for the reuse of code and the ability to create modular and flexible systems. This means that objects can be used in multiple contexts and can be easily modified or extended to suit different purposes. By reusing code and leveraging existing objects, developers can save time and effort in programming, leading to cost savings. This advantage has contributed to the widespread adoption and popularity of object-oriented programming.

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  • 34. 

    When used in a program, the repetition structure directs the computer to repeat one or more instructions until some condition is met.  

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The repetition structure in a program allows the computer to execute a set of instructions repeatedly until a certain condition is satisfied. This is a fundamental concept in programming and is often used to perform tasks such as iterating over a list of items, processing input until a specific value is entered, or executing a block of code a certain number of times. By repeating instructions, programmers can efficiently automate processes and solve complex problems. Therefore, the statement "True" accurately describes the role of the repetition structure in a program.

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  • 35. 

    Variables declared using the string data type usually are initialized to the empty string.  

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Variables declared using the string data type are usually initialized to the empty string because it is a common practice to start with an empty string and then add or concatenate values to it as needed. This allows for flexibility in manipulating and storing string data. Therefore, the correct answer is true.

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  • 36. 

    When the loop condition in a posttest loop evaluates to true, the computer processes the instructions in the loop body.  

    • True

    • False

    Correct Answer
    A. True
    Explanation
    In a posttest loop, the loop condition is checked after the instructions in the loop body are executed. If the loop condition evaluates to true, the computer will continue processing the instructions in the loop body. Therefore, the given statement is true.

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  • 37. 

    A data type ranks higher than another data type if it can store larger numbers.  

    • True

    • False

    Correct Answer
    A. True
    Explanation
    In programming, data types determine the type of values that can be stored in a variable. When comparing data types, a data type is considered to rank higher if it can store larger numbers. This means that it has a greater range or capacity to hold larger numerical values. Therefore, the statement "A data type ranks higher than another data type if it can store larger numbers" is true.

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  • 38. 

    A class encapsulates all of the attributes and behaviors that describe the object the class creates.  

    • True

    • False

    Correct Answer
    A. True
    Explanation
    A class is a blueprint for creating objects in object-oriented programming. It encapsulates the attributes (data) and behaviors (methods) that define the object it creates. This means that the class contains all the necessary information and functionality to create and manipulate instances of that class. Therefore, the statement "A class encapsulates all of the attributes and behaviors that describe the object the class creates" is true.

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  • 39. 

    Most algorithms begin with an instruction that enters the input items into the computer.  

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Most algorithms require input in order to perform their calculations or operations. Therefore, it is common for algorithms to begin with an instruction that allows the user to enter the input items into the computer. This input is necessary for the algorithm to work correctly and produce the desired output.

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  • 40. 

    When coding the while statement, some C++ programmers include the braces even when the loop body contains only one statement.  

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Some C++ programmers include braces even when the loop body contains only one statement because it helps improve code readability and maintainability. By including braces, it makes it clear where the loop body begins and ends, reducing the chances of introducing bugs or confusion. It also makes it easier to add additional statements to the loop body in the future without having to modify the code structure. Overall, including braces in the while statement is considered a good practice in C++ programming.

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  • 41. 

    It is a good programming practice to use a comment, such as //end while, to mark the end of the while statement.  

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Using a comment to mark the end of a while statement is indeed a good programming practice. Comments can help improve code readability and make it easier for other developers to understand the purpose and functionality of the code. By adding a comment like "//end while", it becomes clear where the while loop ends, making the code more maintainable and reducing the chances of introducing errors or confusion.

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  • 42. 

    The check boxes, list boxes, and buttons included in most Windows programs are objects.  

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The explanation for the given correct answer is that check boxes, list boxes, and buttons are all examples of user interface elements that can be interacted with by the user. These elements are typically used to perform actions or make selections within a program. In the context of Windows programs, these elements are considered objects because they have properties, methods, and events associated with them, allowing them to be manipulated and controlled programmatically. Therefore, the statement "The check boxes, list boxes, and buttons included in most Windows programs are objects" is true.

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  • 43. 

    You should use a posttest loop only when you are sure that the loop body instructions can and should be processed.  

    • True

    • False

    Correct Answer
    A. True
    Explanation
    A posttest loop is a type of loop where the loop body instructions are executed after the condition is checked. This means that the loop body will always be executed at least once before the condition is checked. Therefore, it is important to use a posttest loop only when you are sure that the loop body instructions can and should be processed, as they will always be executed at least once. If there is a possibility that the loop body instructions should not be processed, then a different type of loop should be used.

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  • 44. 

    Int sales = 0;int region = 1;int totRegSales = 0;while (region < 3){cout << "First sales amount for Region "<< region << ": ";cin >> sales;while (sales > 0){totRegSales = totRegSales + sales;cout << "Next sales amount for Region "<< region << ": ";cin >> sales;} //end whilecout << endl << "Region " << region << " sales: $"<< totRegSales << endl << endl;region = region + 1;totRegSales = 0;} //end whilecout << "End of program" << endl;67. The first instruction in the inner loop in the code shown above adds the amount stored in the sales variable to the contents of the totRegSales accumulator variable.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The given code snippet uses a nested while loop to calculate the total sales for each region. The first instruction in the inner loop is "totRegSales = totRegSales + sales", which adds the value of the sales variable to the totRegSales accumulator variable. This means that the sales amount for each region is being accumulated and added to the total sales for all regions. Therefore, the statement "The first instruction in the inner loop in the code shown above adds the amount stored in the sales variable to the contents of the totRegSales accumulator variable" is true.

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  • 45. 

    When generating pseudo-random numbers, a seed is an integer that represents the starting point for the random number generator.  

    • True

    • False

    Correct Answer
    A. True
    Explanation
    A seed is indeed an integer that serves as the starting point for the random number generator. It is used to initialize the generator so that it produces a sequence of numbers that appear to be random but can be reproduced if the same seed is used again. By setting a specific seed, the same sequence of pseudo-random numbers can be generated, which can be useful for debugging or ensuring consistent results in simulations or games.

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  • 46. 

    Programmers typically desk-check a program using the same sample data used to desk-check the algorithm.  

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Programmers typically desk-check a program using the same sample data used to desk-check the algorithm because it allows them to verify the correctness of the program's logic and ensure that it produces the expected output. By using the same sample data, programmers can compare the actual output of the program with the expected output, identifying any discrepancies or errors in the code. This process helps in debugging and refining the program before it is executed with real data. Therefore, the given answer "True" is correct.

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  • 47. 

    A loop condition must result in either a true or false answer only.  

    • True

    • False

    Correct Answer
    A. True
    Explanation
    A loop condition is a condition that determines whether a loop should continue running or not. It is typically a boolean expression that evaluates to either true or false. If the condition is true, the loop continues to iterate, otherwise, it terminates. Therefore, it is necessary for a loop condition to result in either a true or false answer only.

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  • 48. 

    Passing an array by reference is more efficient than passing it by value.  

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Passing an array by reference is more efficient than passing it by value because when an array is passed by value, a copy of the entire array is made and passed to the function or method. This can be time-consuming and memory-intensive, especially for large arrays. On the other hand, when an array is passed by reference, only a reference to the original array is passed. This means that any changes made to the array within the function or method will directly affect the original array, saving time and memory.

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  • 49. 

    The C++ compiler treats all numeric literal constants containing a decimal place as a double data type.  

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The C++ compiler treats all numeric literal constants containing a decimal place as a double data type. This means that if a number includes a decimal point, it will be considered as a double by default.

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Quiz Review Timeline (Updated): Mar 22, 2023 +

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  • Current Version
  • Mar 22, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Apr 22, 2009
    Quiz Created by
    Mrmirante
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