Explore topic-wise MCQs in C Programming.

This section includes 175 Mcqs, each offering curated multiple-choice questions to sharpen your C Programming knowledge and support exam preparation. Choose a topic below to get started.

101.

What is the difference between the following 2 codes?//Program 1#include <stdio.h> int main() { int n3, n1 = 2, n2 = 3; n3 = n1++ + ++n2; printf("%d %d %d", n3, n1, n2); }//Program 2#include <stdio.h> int main() { int n3, n1 = 2, n2 = 3; n3 = n1++ + +++n2; printf("%d %d %d", n3, n1, n2); }

A. Space does make a difference, values of n1, n2, n3 are different
B. No difference as space doesn t make any difference, values of n1, n2, n3 are same in both the case
C. Program 2 has syntax error, program 1 is not
D. Program 1 has syntax error, program 2 is not
E. None of these
Answer» D. Program 1 has syntax error, program 2 is not
Discussion
102.

What will be the output of the following C code?#include <stdio.h> void main() { int p = 5; int q = ++p + p++ + --p; printf("Value of q is %d", q); }

A. Value of q is 19
B. Value of q is 18
C. Value of q is 17
D. Value of q is 5
E. None of these
Answer» B. Value of q is 18
Discussion
103.

What will be the output of the following C code?#include <stdio.h> int main() { int n = 5; if (n & (n = 6)) printf("True %d n", n); else printf("False %d n", n); }

A. True 5
B. False 5
C. False 6
D. Compilation Error
E. True 6
Answer» F.
Discussion
104.

What will be the output of the following C code?#include <stdio.h> void main() { int num1 = 5; int num2 = 10 % 3 * 12 / 4; printf("Value of num is %d", num2); }

A. Value of num is 0
B. Value of num is 1
C. Value of num is 2
D. Value of num is 3
E. None of these
Answer» E. None of these
Discussion
105.

What will be the output of the following C code?#include <stdio.h> int main() { int n1 = 2, n2 = 2, n3; n3 = n1++ + n2; printf("%d, %d", n1, n2); }

A. 2
B. 3, 2
C. 2, 3
D. Compilation Error
E. None of these
Answer» C. 2, 3
Discussion
106.

What will be the output of the following C code? #include <stdio.h> int main() { int p = 2, q = 2, r = 2; printf("%d, %d, %d", ++p + ++p + p++, p++ + ++q, ++r + r++ + p++); }

A. 2, 2, 2
B. 6, 9, 18
C. 9, 6, 18
D. 18, 6, 9
E. None of these
Answer» E. None of these
Discussion
107.

What will be the output of the following C code?#include <stdio.h> void main() { int num = 7.5 % 3; printf("Value of x is %d", num); }

A. Value of num is 7.5
B. Value of num is 3
C. Value of num is 2.0
D. Compilation Error
E. None of these
Answer» E. None of these
Discussion
108.

What will be the output of the following C code?#include <stdio.h> int main() { int p = 3; if (4 |(p = 4)) printf("p is %d n", p); else printf("%d n", p); }

A. p is 3
B. Compilation Error
C. Runtime Error
D. Garbage value
E. p is 4
Answer» F.
Discussion
109.

What will be the final value of x in the following C code?#include <stdio.h> void main() { int num = 11 * 6 / 5 + 23; }

A. 11
B. 36
C. 5
D. 23
E. Depends on compiler
Answer» C. 5
Discussion
110.

What will be the output of the following C code?#include <stdio.h> int main() { int n = 15, m = 15; if (n = 10) m--; printf("%d, %d", n, m--); }

A. 15, 15
B. 14, 10
C. 10, 15
D. 10, 14
E. None of these
Answer» E. None of these
Discussion
111.

What will be the output of the following C code?#include <stdio.h> int main() { int k = -13; k = k / 3; printf("%d n", k); return 0; }

A. -13
B. 3
C. -4
D. All of above
E. None of these
Answer» D. All of above
Discussion
112.

What will be the output of the following C code?#include <stdio.h> int main() { int n = -7; if (!0 == 1) printf("Yes n"); else printf("No n"); }

A. Compilation Error
B. Runtime Error
C. Garbage value
D. Yes
E. No
Answer» E. No
Discussion
113.

Which of the following is the correct output for the program given below?#include <stdio.h>int main ( ){ int a = 9, b, c; b = --a; c = a--; printf ( "%d %d %d n", a, b, c); return 0;}

A. 9 8 8
B. 9 8 7
C. 8 8 7
D. 7 8 8
E. 7 7 8
Answer» E. 7 7 8
Discussion
114.

Which of the following statements are correct about the code snippet given below?int number = 10;int p = number > 5 ? p = 30;

A. First; is treated as a null statement
B. Second; is treated as a statement terminator
C. 30 would be assigned to p
D. Compiler would report an error
Answer» E.
Discussion
115.

Which of the following is the correct output for the program given below ?#include <stdio.h>int main ( ){ int x = 10, y = 20, z; z = (x == 10 || y > 20); printf ( "z = %d n", z); return 0;}

A. z = 100
B. z = 200
C. z = 1
D. z = 0
E. z = 300
Answer» D. z = 0
Discussion
116.

Which of the following is the correct output for the program given below ?#include <stdio.h>int main ( ){ int a = 12, b = 7, c; c = a != 4 || b == 2; printf ("c = %d n" , c); return 0;}

A. c = 0
B. c = 1
C. c = 4
D. c = 2
Answer» C. c = 4
Discussion
117.

Which of the following is the correct output for the program given below? #include <stdio.h>int main ( ){ int a = 4, b = -1, c = 0, p, q, r, s; p = a || b || c; q = a && b && c; r = a || b && c; s = a && b || c; printf ("%d %d %d %d n", p, q, r, s); return 0;}

A. 1 1 1 1
B. 1 1 0 1
C. 1 0 0 1
D. 0 1 1 1
E. 1 0 1 1
Answer» F.
Discussion
118.

What will be the output of the following C code?#include <stdio.h> int main() { if (~2 == 3) { printf("Yes n"); } else { printf("No n"); } }

A. Compilation Error
B. Runtime Error
C. Garbage value
D. Yes
E. No
Answer» F.
Discussion
119.

What will be the output of the following C code?#include <stdio.h> int main() { int k = 13; k = k / 3; printf("%d n", k); return 0; }

A. 13
B. 3
C. 4
D. All of above
E. None of these
Answer» D. All of above
Discussion
120.

What will be the output of the following C code?#include <stdio.h> int main() { int k = 2; int L = k++ + k; printf("%d n", L); }

A. Compilation Error
B. Runtime Error
C. 2
D. 5
E. None of these
Answer» E. None of these
Discussion
121.

Which of the following is the correct output for the program given below? #include <stdio.h>int main ( ){ int a, b, c; a = b = c = 1; c = ++a || ++b && ++c; printf ( "a = %d b = %d c = %d n", a , b, c); return 0;}

A. a = 2 b = 1 c = 1
B. a = 2 b = 2 c = 2
C. a = 2 b = 2 c = 1
D. a = 1 b = 2 c = 1
Answer» B. a = 2 b = 2 c = 2
Discussion
122.

What will be the output of the following C code?#include <stdio.h> void main() { int p = -6; int s = (p++, ++p); printf("%d n", s); }

A. 6
B. -6
C. 4
D. -4
E. Compilation Error
Answer» E. Compilation Error
Discussion
123.

What will be the output of the following C code?#include <stdio.h> void main() { int n = 5; int *ptr = &n; int *q = ptr++; int r = ptr - q; printf("%d", r); }

A. Compilation Error
B. 5
C. 1
D. Runtime Error
E. None of these
Answer» D. Runtime Error
Discussion
124.

What will be the output of the following C code? #include <stdio.h> void main() { int p = 6, q, r; q = --p; r = p--; printf("%d %d %d", p, q, r); }

A. 5 5 4
B. 5 4 5
C. Compilation Error
D. 4 5 5
E. None of these
Answer» E. None of these
Discussion
125.

What will be the output of the following C code?#include <stdio.h> void main() { int n1 = 100; int n2 = sizeof(n1++); printf("n1 is %d", n1); }

A. n1 is 100
B. Compilation Error
C. Runtime Error
D. Garbage value
E. None of these
Answer» B. Compilation Error
Discussion
126.

What will be the output of the following C code?#include <stdio.h> int main() { int n = -5; n = n >> 2; printf("%d n", n); }

A. -5
B. 2
C. Compilation Error
D. -2
E. Either -1 or 1
Answer» E. Either -1 or 1
Discussion
127.

What will be the output of the following C code?#include <stdio.h> int main() { int num = 7; num = num << 2; printf("%d n", num); }

A. 28
B. 7
C. 2
D. Compilation Error
E. None of these
Answer» B. 7
Discussion
128.

What will be the output of the following C code?#include <stdio.h> void main() { int n = -7; int p = (n++, ++n); printf("%d n", p); }

A. -7
B. Compilation Error
C. -5
D. Runtime Error
E. None of these
Answer» D. Runtime Error
Discussion
129.

What will be the output of the following C code?#include <stdio.h> void main() { int num1 = 7, num2 = -9, num3 = 3, num4; num4 = ++num1 && ++num2 || ++num3; printf("%d %d %d %d", num1, num2, num3, num4); }

A. 8 -8 3 1
B. 1 3 8 -8
C. 1 8 -8 3
D. 8 1 3 -8
E. None of these
Answer» B. 1 3 8 -8
Discussion
130.

What will be the output of the following C code?#include void main() { int n = 6; int *ptr1 = &n; int *ptr2 = ptr1++; int Res = ptr1 - ptr2; printf("%d", Res); }

A. 1
B. 6
C. Compilation Error
D. Runtime Error
E. None of these
Answer» B. 6
Discussion
131.

Comment on the output of the following C code.#include <stdio.h> int main() { int k, num, x = 6; scanf("%d", &num); for (k = 0; k < num; k++) num = num * 3; }

A. Bitwise exclusive OR
B. Arithmetic Shift right
C. Logical Shift left
D. No output
E. None of these
Answer» E. None of these
Discussion
132.

What will be the output of the following C code?#include <stdio.h> int main() { int num = 4; if (num >> 2) printf("%d n", num); }

A. 2
B. Compilation Error
C. 4
D. Runtime Error
E. None of these
Answer» D. Runtime Error
Discussion
133.

What will be the output of the following C code?#include <stdio.h> int main() { if (7 & 8) printf("All"); if ((~7 & 0x000f) == 8) printf("that glitters is not gold. n"); }

A. All
B. All that glitters is not gold
C. that glitters is not gold
D. Compilation Error
E. None of these
Answer» D. Compilation Error
Discussion
134.

What will be the output of the following C code?#include <stdio.h> int main() { int k = 3; int L = ++k + k; printf("%d n", L); }

A. 3
B. Compilation Error
C. 8
D. Runtime Error
E. None of these
Answer» D. Runtime Error
Discussion
135.

What will be the output of the following C code?#include <stdio.h> int main() { int n = 12; int m = n / -5; int p = n % -5; printf("%d %d n", m, p); return 0; }

A. -2
B. 2
C. 2 -2
D. -2 2
E. None of these
Answer» E. None of these
Discussion
136.

What will be the output of the following C code? #include <stdio.h> int main() { unsigned int num = 20; num = ~num; printf("%d n", num); }

A. -21
B. Compilation Error
C. 20
D. Runtime Error
E. None of these
Answer» B. Compilation Error
Discussion
137.

What will be the output of the following C code?

A. 3 4 4
B. 4 4 3
C. 4 3 3
D. 4 3 4
E. Compilation Error
Answer» B. 4 4 3
Discussion
138.

What will be the output of the following C code?#include <stdio.h> int main() { int n = -5; int m = n % 2; printf("%d n", m); }

A. -1
B. 1
C. Compilation Error
D. Runtime Error
E. None of these
Answer» B. 1
Discussion
139.

What will be the output of the following C code?#include <stdio.h> void main() { int num1 = 99; int num2 = sizeof(num1++); printf("num1 is %d", num1); }

A. num1 is 97
B. num1 is 98
C. num1 is 99
D. Compilation Error
E. None of these
Answer» D. Compilation Error
Discussion
140.

What will be the output of the following C code?#include <stdio.h> int main() { int k = 12; int *ptr = &k; printf("%d n", *ptr++); }

A. Compilation Error
B. 12
C. Runtime Error
D. Address of k
E. None of these
Answer» C. Runtime Error
Discussion
141.

What will be the output of the following C code?#include <stdio.h> int main() { int k = 1; int n = k++, m = ++k; printf("%d % d n", n, m); return 0; }

A. 1
B. 3
C. 3 1
D. 1 3
E. None of these
Answer» E. None of these
Discussion
142.

What will be the output of the following C code?#include <stdio.h> int main() { int k = 3; int k = k++ + k; printf("%d n", k); }

A. 3
B. 4
C. 5
D. Compilation Error
E. None of these
Answer» E. None of these
Discussion
143.

Which of the following is the correct order of calling functions in the code snippet given below?a = f1 (10, 20 ) * f2 (30/40) + f3();

A. f1, f2, f3
B. f3, f2, f1
C. The order may vary from compiler to compiler
D. None of the above
Answer» D. None of the above
Discussion
144.

Which of the following is the correct output for the program given below?#include <stdio.h>int main ( ){ int a = 25; printf ("%d %d %d n",a <= 20, a = 15, a >= 10); return 0;}

A. 1 15 1
B. 1 20 1
C. 1 25 0
D. 1 1 1
E. 0 0 0
Answer» B. 1 20 1
Discussion
145.

Which of the following is correct order of evaluation for the expression given below ?

A. * / % + - =
B. = * / % + -
C. / * % - + =
D. * / % - + =
E. - % / * + =
Answer» B. = * / % + -
Discussion
146.

What will be the final values of p and q in the following C statement? (Initial values: p = 2, q = 1)

A. p = 1, q = 2;
B. p = 2, q = 2;
C. p = 2, q = 2;
D. p = 0, q = 0;
E. None of these
Answer» E. None of these
Discussion
147.

What will be the final values of p and q in the following C code?

A. k value is 0 and L value is 0
B. k and L value are undefined
C. Compilation Error
D. Runtime Error
E. None of these
Answer» D. Runtime Error
Discussion
148.

What will be the final values of k and L in the following C code?

A. k value is 0 and L value is 0
B. Compilation Error
C. k value is 1 and L value is 1
D. Runtime Error
E. None of these
Answer» B. Compilation Error
Discussion
149.

What will be the output of the following C function?

A. 2 3
B. 2 3 4
C. 2 3 4 5 6 7
D. 5 6 7
E. 5 6
Answer» D. 5 6 7
Discussion
150.

What will be the final value of c in the following C code snippet? (Initial values: p = 1, q = 2, r = 1)

A. r = 2
B. r = 3
C. r = 1
D. Syntax Error
E. None of these
Answer» B. r = 3
Discussion