100 Multiple Choice Questions In C Programming – Part 11
This collection of 100 Multiple Choice Questions and Answers (MCQs) In C Programming : Quizzes & Practice Tests with Answer focuses on “C Programming”.
1. We want to change the size of an array ‘Arr’ of integers, from 10 to 11 integers ?
A Arr = (int *) malloc(11* sizeof(int));
B Arr = (int *) malloc(11);
C Arr= (int *) realloc(T, 11* sizeof(int));
D Arr = (char *) realloc(11 * sizeof (int));
2. P points to an array of 10 integers, we want to free the memory it occupies. So how do we do it?
A P = NULL;
B *P = 0;
C free(P);
D free(*P);
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3. What is the value of “z” in this code?
#include <stdio.h>
int main()
{
int x = 10;
double y = 5.6;
int c;
int z = x + y;
printf("Value of z is %d", z);
}
A Value of z is 10
B Value of z is 15
C Value of z is 15.6
D Value of z is 16
4. What is the value of “z” in this code?
#include <stdio.h>
int main()
{
int x = 10, y = 5, w = 5;
int d;
int z = x == (y + w);
printf("Value of z is %d", z);
}
A Value of z is 5
B Value of z is 1
C Value of z is 10
D Syntax error
5. What is the output of the following C program?
#include <stdio.h>
int main()
{
int a = 1, b = 0, c = 3;
a > b ? printf("%d", c) : return c;
}
A 1
B 3
C Runtime error
D Compilation error
error: expected expression before 'return'
a > b ? printf("%d", c) : return c;
^
We cannot put “return” in a ternary condition. To perform this kind of statement we use the “if” statement as shown below:
#include <stdio.h>
int main()
{
int a = 1, b = 0, c = 3;
if(a > b )
printf("%d", c);
else
return c;
}
6. What is the output of the following C program?
#include <stdio.h>
void main()
{
int a = 1, c = 3;
int b = a << 3;
printf(" %d\n", b);
}
A 8
B 1
C -724794438
D Compilation error
Left shift (a << 3) : 0000 1000
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7. What is the output of the following C program?
#include <stdio.h>
void main()
{
int a = 0, b = 2, c = 3;
int x = a & b | c;
printf("%d", x);
}
A 2
B 3
C 0
D Depends on compiler
AND bitwise is a binary operator (operates on two operands). It is represented by &.
The & operator compares the corresponding bits of two operands. If both bits are 1, it gives 1. If one of the bits is not 1, it gives 0. For example the AND bitwise of a & b :
a = 0 (in decimal) = 00000000 (in binary)
b = 2 (in decimal) = 00000010 (in binary)
AND bitwise of 0 and 2
00000000 & 00000010 __________ = 00000000 = 0 (in decimal)
Or bitwise is a binary operator (operates on two operands). It is represented by |.
The | operator compares the corresponding bits of two operands. If one of the bits is 1, it gives 1. For example the OR bitwise of (a & b) | c:
(a & b) = 0 (in decimal) = 00000000 (in binary)
c = 3 (in decimal) = 00000011 (in binary)
OR bitwise of 0 and 3
00000000 | 00000011 __________ = 00000011 = 3 (in decimal)
8. What is the output of the following C program?
#include <stdio.h>
int main()
{
int a = 0, b = 0;
if (a && (b = a + 10))
//do something
;
;
}
A 10
B 0
C Depends on compiler
D Depends on the standard
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9. What is the output of the following C program?
#include <stdio.h>
int main()
{
int a = 1;
if (a++ && (a == 1))
printf("OK\n");
else
printf("KO\n");
}
A KO
B OK
C Depends on compiler
D Depends on the standard
10. Why is it called C++?
A Because it is the increment of the C language
B Because it is the C language plus the Javascript language
C Because it’s more elegant
D All the answers are true
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- 100 Multiple Choice Questions In C Programming – Part 1
- 100 Multiple Choice Questions In C Programming – Part 2
- 100 Multiple Choice Questions In C Programming – Part 3
- 100 Multiple Choice Questions In C Programming – Part 4
- 100 Multiple Choice Questions In C Programming – Part 5
- 100 Multiple Choice Questions In C Programming – Part 6
- 100 Multiple Choice Questions In C Programming – Part 7
- 100 Multiple Choice Questions In C Programming – Part 8
- 100 Multiple Choice Questions In C Programming – Part 9
- 100 Multiple Choice Questions In C Programming – Part 10
- 100 Multiple Choice Questions In C Programming – Part 11
- 100 Multiple Choice Questions In C Programming – Part 12
- 100 Multiple Choice Questions In C Programming – Part 13
- 100 Multiple Choice Questions In C Programming – Part 14
