4) What is the size of int data type ?

Depends on the system/ compiler

7) Point out the error (if any) in the following C code? #include<stdio.h> enum hello { a,b,c; }; main() { enum hello m; printf("%d",m); }

Error in the statement: enum hello m;

Error in the statement: printf(“%d”,m);

Kaun Banega C-star (Set 1)

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| Written by Sanjana

Sanjana

Community Contributor

Total Contribution - 1 | Total attempts - 33

Questions: 9 | Attempts: 33 | Updated: Mar 14, 2023

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Questions and Answers

1.

1) Which among the below is not a data type associated with C ?
- A.
  
  Int
- B.
  
  Float
- C.
  
  Object
- D.
  
  Void
Correct Answer
C. Object

Explanation
The correct answer is "object" because in the C programming language, there is no built-in data type called "object". C primarily supports data types like int, float, and void, but not object. Object-oriented programming concepts and the associated object data type are typically found in languages like C++, Java, and C#.

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2.

2) All keywords in C are _____________.
- A.
  
  Lowercase letters
- B.
  
  Uppercase letters
- C.
  
  Camelcase letters
- D.
  
  Both a & b
Correct Answer
A. Lowercase letters

Explanation
In the C programming language, all keywords are written in lowercase letters. Keywords are predefined words that have special meanings and are reserved for specific purposes in the language. By using lowercase letters for keywords, it helps to distinguish them from user-defined identifiers or variables. Using uppercase or camelcase letters for keywords would result in syntax errors or unexpected behavior in the program. Therefore, the correct answer is lowercase letters.

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3.

3) Which among the following is odd one out?
- A.
  
  Printf()
- B.
  
  Scanf()
- C.
  
  Putchar()
- D.
  
  Fprintf()
Correct Answer
B. Scanf()

Explanation
The odd one out is scanf() because it is used for input, while the other options (printf(), putchar(), and fprintf()) are used for output.

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4.

4) What is the size of int data type ?
- A.
  
  4 Bytes
- B.
  
  8 Bytes
- C.
  
  Depends on the system/ compiler
- D.
  
  2 Bytes
Correct Answer
C. Depends on the system/ compiler

Explanation
The size of the int data type depends on the system or compiler being used. Different systems or compilers may allocate different amounts of memory for the int data type. Therefore, the size of int can vary.

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5.

5) Which of the following declarations is not supported in c?
- A.
  
  String str
- B.
  
  Char *str
- C.
  
  Float str=3e2
- D.
  
  Both a and c
Correct Answer
A. String str

Explanation
The declaration "string str" is not supported in C. In C, the string data type is not built-in, so we cannot directly declare a variable as a string. Instead, we use character arrays to represent strings in C. Therefore, the correct answer is "string str".

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6.

6) For a typical program input is taken using ____________
- A.
  
  Scanf
- B.
  
  Files
- C.
  
  Command line
- D.
  
  All of the above
Correct Answer
D. All of the above

Explanation
The correct answer is "All of the above" because in a typical program, input can be taken using scanf, files, or command line. The scanf function is commonly used to read input from the user during runtime. Files can be used to read input from external sources such as text files. Command line arguments can also be used to pass input to a program when it is executed. Therefore, all three options are valid methods for taking input in a typical program.

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7.

7) Point out the error (if any) in the following C code? #include<stdio.h> enum hello { a,b,c; }; main() { enum hello m; printf("%d",m); }
- A.
  
  No error
- B.
  
  Error in the statement: a,b,c;
- C.
  
  Error in the statement: enum hello m;
- D.
  
  Error in the statement: printf(“%d”,m);
Correct Answer
B. Error in the statement: a,b,c;

Explanation
The error in the code is in the statement "a,b,c;". In an enum declaration, each enumerator should be separated by a comma, but the semicolon at the end is not necessary. The correct statement should be "a,b,c".

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8.

8) In C language, FILE is of which data type?
- A.
  
  Int
- B.
  
  Char*
- C.
  
  Struct
- D.
  
  None of the mentioned
Correct Answer
C. Struct

Explanation
In C language, the FILE is of the struct data type. This data type is used to define the structure of a file, which includes various attributes and information about the file such as its name, location, size, and file operations. The struct data type allows the programmer to organize and access the different elements of the file in a structured manner. Therefore, the correct answer is "struct".

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9.

9) What will be the output of the following code? #include<stdio.h> #define square(x) x*x void main() { int i; i=64/square(4); printf(“%d”,i); }
- A.
  
  4
- B.
  
  64
- C.
  
  16
- D.
  
  None of these
Correct Answer
B. 64

Explanation
The code defines a macro `square(x)` which calculates the square of a number. In the `main` function, the variable `i` is assigned the value of `64` divided by the result of `square(4)`. Since the macro expands to `4*4`, the expression becomes `64/4*4`, which follows the left-to-right evaluation order. Therefore, the division is performed first, resulting in `16*4`, and the final value of `i` is `64`.

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Kaun Banega C-star (Set 1)

1) Which among the below is not a data type associated with C ?

2) All keywords in C are _____________.

3) Which among the following is odd one out?

4) What is the size of int data type ?

5) Which of the following declarations is not supported in c?

6) For a typical program input is taken using ____________

7) Point out the error (if any) in the following C code? #include<stdio.h> enum hello { a,b,c; }; main() { enum hello m; printf("%d",m); }

8) In C language, FILE is of which data type?

9) What will be the output of the following code? #include<stdio.h> #define square(x) x*x void main() { int i; i=64/square(4); printf(“%d”,i); }