C And C Sharp Quizes
- 1.Which of the following statements should be used to obtain a remainder after dividing 3.14 by 2.1 ?
- A.
Rem = 3.14 % 2.1;
- B.
Rem = modf(3.14, 2.1);
- C.
Rem = fmod(3.14, 2.1);
- D.
Remainder cannot be obtain in floating point division.
- 2.Point out the error in the following program #include<stdio.h> int main() { display(); return 0; } void display() { printf("Welcome To Tait"); }
- A.
No error
- B.
Display() doesn't get invoked
- C.
Display() is called before it is defined
- D.
None of these
- 3.Which statement will you add in the following program to work it correctly? #include<stdio.h> int main() { printf("%f\n", log(36.0)); return 0; }
- A.
#include(conio.h)
- B.
#include(math.h)
- C.
#include(stdlib.h)
- D.
#include(string.h)
- 4.In which header file is the NULL macro defined?
- A.
Stdio.h
- B.
Stddef.h
- C.
Stdio.h and stddef.h
- D.
Math.h
- 5.Point out the error in the program #include<stdio.h> int main() { int a[] = {10, 20, 30, 40, 50}; int j; for(j=0; j<5; j++) { printf("%d\n", a); a++; } return 0; }
- A.
Error: Declaration syntax
- B.
Error: Expression syntax
- C.
Error: LValue required
- D.
Rvalue required
- 6.Which bitwise operator is suitable for checking whether a particular bit is on or off?
- A.
&& operator
- B.
& operator
- C.
|| operator
- D.
! operator
- 7.Assunming, integer is 2 byte, What will be the output of the program? #include<stdio.h> int main() { printf("%x\n", -1>>1); return 0; }
- A.
Ffff
- B.
0fff
- C.
000f
- D.
Fff0
- 8.What function should be used to free the memory allocated by calloc() ?
- A.
Dealloc();
- B.
Malloc(variable_name, 0)
- C.
Free();
- D.
Memalloc(variable_name, 0)
- 9.What will be the output of the program? #include #include int main() { char *s; char *fun(); s = fun(); printf("%s\n", s); return 0; } char *fun() { char buffer[30]; strcpy(buffer, "RAM"); return (buffer); }
- A.
0xffff
- B.
Garbage value
- C.
Ram
- D.
Error
- 10.Which standard library function will you use to find the last occurance of a character in a string in C?
- A.
Strnchar()
- B.
Strchar()
- C.
Strrchar()
- D.
Strrchr()
- 11.How many times the program will print "vardhaman" ? #include<stdio.h> int main() { printf("vardhaman"); main(); return 0; }
- A.
Infinite times
- B.
32767 times
- C.
65535 times
- D.
Till stack overflows
- 12.Which of the following statements are correct about the program? #include<stdio.h> int main() { printf("%d\n", main()); return 0; }
- A.
It prints garbage values infinitely
- B.
Runs infinitely without printing anything
- C.
Error: main() cannot be called inside printf()
- D.
No Error and print nothing
- 13.What does the following declaration mean?int (*ptr)[10];
- A.
Ptr is array of pointers to 10 integers
- B.
Ptr is a pointer to an array of 10 integers
- C.
Ptr is an array of 10 integers
- D.
Ptr is an pointer to array
- 14.What will be the output of the program ? #include<stdio.h> void fun(int **p); int main() { int a[3][4] = {1, 2, 3, 4, 4, 3, 2, 8, 7, 8, 9, 0}; int *ptr; ptr = &a[0][0]; fun(&ptr); return 0; } void fun(int **p) { printf("%d\n", **p); }
- A.
1
- B.
2
- C.
3
- D.
4
- 15.What will be the output of the program ? #include<stdio.h> int main() { float arr[] = {12.4, 2.3, 4.5, 6.7,11.2}; printf("%d\n", sizeof(arr)/sizeof(arr[0])); return 0; }
- A.
6
- B.
4
- C.
5
- D.
7
- 16.What does fp point to in the program ? #include<stdio.h> int main() { FILE *fp; fp=fopen("trial", "r"); return 0; }
- A.
The first character in the file
- B.
A structure which contains a char pointer which points to the first character of a file.
- C.
The name of the file.
- D.
The last character in the file.
- 17.Which of the following are unary operators in C?1. !2. sizeof3. ~4. &&
- A.
1,2
- B.
1,3
- C.
2,4
- D.
1,2,3
- 18.What will be the output of the program? #include<stdio.h> int main() { int i=-3, j=2, k=0, m; m = ++i || ++j && ++k; printf("%d, %d, %d, %d\n", i, j, k, m); return 0; }
- A.
2, 2, 0, 1
- B.
1, 2, 1, 0
- C.
-2, 2, 0, 0
- D.
-2, 2, 0, 1
- 19.What will be the output of the program ? #include<stdio.h> #include<string.h> int main() { char str1[20] = "Hello", str2[20] = " World"; printf("%s\n", strcpy(str2, strcat(str1, str2))); return 0; }
- A.
Hello
- B.
World
- C.
Hello World
- D.
WorldHello
- 20.What do the 'c' and 'v' in argv stands for?
- A.
'c' means argument control 'v' means argument vector
- B.
'c' means argument count 'v' means argument vertex
- C.
'c' means argument count 'v' means argument vector
- D.
'c' means argument configuration 'v' means argument visibility
- 21.What will the SWAP macro in the following program be expanded to on preprocessing? will the code compile? #include<stdio.h> #define SWAP(a, b, c)(c t; t=a, a=b, b=t) int main() { int x=10, y=20; SWAP(x, y, int); printf("%d %d\n", x, y); return 0; }
- A.
It compiles
- B.
Compiles with an warning
- C.
Not compile
- D.
Compiles and print nothing
- 22.Which header file should be included to use functions like malloc() and calloc()?
- A.
Memory.h
- B.
Stdlib.h
- C.
Math.h
- D.
Dos.h
- 23.Which of the following is the correct usage of conditional operators used in C?
- A.
A>b ? c=30 : c=40;
- B.
A>b ? c=30;
- C.
Max = a>b ? a>c?a:c:b>c?b:c
- D.
Return (a>b)?(a:b)
- 24.The keyword used to transfer control from a function back to the calling function is
- A.
Switch
- B.
Goto
- C.
Go back
- D.
Return
- 25.In which numbering system can the binary number 1011011111000101 be easily converted to?
- A.
Decimal system
- B.
Hexadecimal system
- C.
Octal system
- D.
No need to convert
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