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.

51.

What will be the output of the following C code?#include <stdio.h> void main() { int p = 15 & 14 | 16; printf("%d", p); }

A. 30
B. 15
C. 16
D. Compilation Error
E. None of these
Answer» B. 15
Discussion
52.

What will be the output of the following C code?#include <stdio.h> void main() { int n = 15 & 14 & 16; printf("%d", n); }

A. 15
B. Compilation Error
C. 14
D. Runtime Error
Answer» F.
Discussion
53.

While swapping 2 numbers what precautions to be taken care?q = (q / p); p = p * q; q = p / q;

A. This code doesn t swap 2 numbers
B. All data types are accepted except for (char *)
C. Data type should be either of short, int and long
D. Data type should be either of float and double
E. None of these
Answer» E. None of these
Discussion
54.

Which of the following option is the correct representation of the following C statement?t = p * q + r / s * u;

A. t = ((p * q) + (r / (s * u)));
B. t = ((p * q) + ((r / s)* u));
C. Both t = ((p * q) + (r / (s * u))); and t = ((p * q) + ((r / s)* u));
D. t = (p * (q +(r /(s * u))));
E. None of these
Answer» D. t = (p * (q +(r /(s * u))));
Discussion
55.

Comment on the following statement.int num = 1; printf("%d, %dnum", 3*num, num++);

A. 1, 3
B. 3, 1
C. Depend on compiler
D. 3, 1num
E. None of these
Answer» D. 3, 1num
Discussion
56.

Which operators of the following have same precedence?N. "!=", M. "+=", S. "<<="

A. N, M and S
B. N and S
C. N and M
D. M and S
E. None of these
Answer» E. None of these
Discussion
57.

What will be the output of the following C code?#include <stdio.h> void main() { char n1 = 'N'; char n2 = 'M'; int n3 = n1 + n2 % 3 - 3 * 2; printf("%d n", n3); }

A. 74
B. N
C. M
D. Garbage value
E. Compilation Error
Answer» B. N
Discussion
58.

What will be the output of the following C code?#include <stdio.h> void main() { char num1 = '2'; char num2 = 'N'; int num3 = num1 && num2 || '2'; printf("%d n", num3); }

A. N
B. 0
C. 1
D. Compilation Error
E. Garbage value
Answer» D. Compilation Error
Discussion
59.

What will be the output of the following C code?#include <stdio.h> void main() { int num = 12 + 13 - 14 + 18 - 15 % 14; printf("%d n", num); }

A. Compilation Error
B. 28
C. 12
D. 13
E. Runtime Error
Answer» C. 12
Discussion
60.

What will be the output of the following C function?#include <stdio.h> int main() { Function(1); } void Function(int k) { if (k > 5) exit(0); printf("%d n", k); return Function(k++); }

A. 5 4 3 2 1
B. 1 2 3 4 5
C. 4 3 2 1
D. Compilation Error
E. Stack overflow
Answer» F.
Discussion
61.

What will be the output of the following C code?#include <stdio.h> void main() { int t1 = 18; int t2 = 14 * 16 + 13 * 14 < 13 ? 14 : 13; printf("%d n", t2); }

A. 12
B. 13
C. 14
D. 15
E. 16
Answer» C. 14
Discussion
62.

What will be the output of the following C code?#include <stdio.h> void main() { int n = 6 * 4 % 7 - 12 + 4; printf("%d", n); }

A. -12
B. Compilation Error
C. -5
D. Runtime Error
E. None of these
Answer» D. Runtime Error
Discussion
63.

What will be the output of the following C code?#include <stdio.h> void main() { int p = 3 + 5 + 4 * 6 / 4 - 6; printf("%d", p); }

A. 4
B. 5
C. 6
D. 7
E. 8
Answer» F.
Discussion
64.

What will be the output of the following C code? #include <stdio.h> void main() { int var = 15 - 14 + 12 * 15; printf("%d", var); }

A. 15
B. 14
C. 12
D. 811
E. 181
Answer» F.
Discussion
65.

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

A. 12
B. 14
C. 16
D. 18
E. 20
Answer» D. 18
Discussion
66.

What will be the output of the following C code?#include <stdio.h> void main() { double m = 5 & 3 && 4 || 5 | 6; printf("%lf", m); }

A. Compilation Error
B. 4.000000
C. 3.000000
D. 2.000000
E. 1.000000
Answer» F.
Discussion
67.

What will be the output of the following C code? #include <stdio.h> void main() { double b = 3 && 5 & 4 % 3; printf("%lf", b); }

A. 1.000000
B. 2.000000
C. 3.000000
D. 4.000000
E. 5.000000
Answer» B. 2.000000
Discussion
68.

What will be the output of the following C code?#include <stdio.h> int main() { int t1 = 3, t2 = 5; int t3 = ~t1 & t2; printf("%d n", t3); }

A. -3
B. 5
C. 3
D. -5
E. 4
Answer» F.
Discussion
69.

What will be the output of the following C code?#include <stdio.h> int main() { int num1 = 5, num2 = 6; if (!num1 && num2) printf("Wrong n"); else printf("Right n"); }

A. Runtime Error
B. Undefined behaviour
C. Compilation Error
D. Wrong
E. Right
Answer» F.
Discussion
70.

What will be the output of the following C code?#include <stdio.h> int main() { int a = 4, b = 4; int c = a ^ b & 3; printf("%d n", c); }

A. Compilation Error
B. 4
C. 3
D. Runtime Error
E. None of these
Answer» C. 3
Discussion
71.

What will be the output of the following C code? #include <stdio.h> void main() { double n = 5 % 3 & 4 + 5 * 6; printf("%lf", n); }

A. 3
B. 4
C. 3.000000
D. 2
E. 2.00000
Answer» F.
Discussion
72.

What will be the output of the following C code?#include <stdio.h> void main() { int p = 3 * 5 + 3 - 4; printf("%d", p); }

A. Compilation Error
B. Garbage value
C. Runtime Error
D. 14
E. None of these
Answer» E. None of these
Discussion
73.

What will be the output of the following C code?#include <stdio.h> int main() { int a = 4, b = 3; int c = a && b = 4; printf("%d n", c); }

A. 3
B. 4
C. Runtime Error
D. Compilation Error
E. None of these
Answer» E. None of these
Discussion
74.

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

A. r = 2
B. r = 3
C. r = 1
D. Syntax Error
E. None of these
Answer» B. r = 3
Discussion
75.

Which expression has to be present in the following?expression1 ? expression2 : expression3;

A. expression3
B. expression2
C. expression1
D. All of above
E. None of these
Answer» E. None of these
Discussion
76.

What will be the data type of the following expression? (Initial data type: n = int, num1 = double, num2 = float)expression (n < 25)? num1 : num2;

A. float
B. double
C. int
D. All of above
E. None of these
Answer» C. int
Discussion
77.

What will be the output of the following C code?#include <stdio.h> void main() { 2 < 3 ? return 2 : return 3; }

A. Runtime Error
B. 2
C. 3
D. Compilation Error
E. None of these
Answer» E. None of these
Discussion
78.

What will be the output of the following C code?#include <stdio.h> void main() { int num1 = 12; int num2 = 10; int num3 = num1 < num2 ? num1 = num2 : num2++; printf("%d", num3); }

A. Compilation Error
B. 12
C. Runtime Error
D. 10
E. None of these
Answer» E. None of these
Discussion
79.

What will be the value of the following assignment expression?(p = fun())!= 2 considering fun() returns 3

A. 1
B. 0
C. 5
D. 6
E. None of these
Answer» F.
Discussion
80.

What is the type of the following assignment expression if p is of type float and q is of type int?q = p + q;

A. float
B. double
C. int
D. there is no type for an assignment expression
E. None of these
Answer» D. there is no type for an assignment expression
Discussion
81.

What will be the output of the following C code?#include <stdio.h> int main() { int p = 2, q = 1; p &&= q; printf("%d n", p); }

A. Compilation Error
B. 2
C. 1
D. Runtime Error
E. None of these
Answer» B. 2
Discussion
82.

What will be the output of the following C code? #include <stdio.h> int main() { int p = 4, q = 4; p /= p / q; printf("%d n", p); return 0; }

A. 1
B. 2
C. 3
D. 4
E. None of these
Answer» E. None of these
Discussion
83.

What will be the output of the following C code?#include <stdio.h> int main() { int p = 5, q = 4; p *= p + q; printf("%d n", p); return 0; }

A. 5
B. 4
C. 45
D. Compilation Error
E. None of these
Answer» D. Compilation Error
Discussion
84.

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

A. -10
B. Compilation Error
C. Runtime Error
D. Garbage value
E. None of these
Answer» B. Compilation Error
Discussion
85.

What will be the output of the following C code snippet? #include <stdio.h> void main() { 2 < 3 ? return 2: return 3; }

A. 2
B. Runtime Error
C. 3
D. Compilation Error
E. None of these
Answer» E. None of these
Discussion
86.

What will be the output of the following C code?#include <stdio.h> void main() { char p = 'p'; int q = (p % 10)++; printf("%d n", q); }

A. 10
B. Compilation Error
C. p
D. Runtime Error
E. None of these
Answer» C. p
Discussion
87.

What will be the output of the following C code? #include <stdio.h> void main() { int num1 = 2, num2 = 0, num3 = 6; int Res = num1 && num2 && num3++; printf("%d", num3); }

A. 0
B. 2
C. 6
D. 7
E. None of these
Answer» D. 7
Discussion
88.

What will be the output of the following C code? #include <stdio.h> void main() { int var1 = 2, var2 = 0, var3 = 6; int R = var1 && var2 || var3++; printf("%d", var3); }

A. 2
B. 7
C. 6
D. Compilation Error
E. None of these
Answer» C. 6
Discussion
89.

What will be the output of the following C code?#include <stdio.h> int main() { int p = 20, q = 10, r = 10; int s; s = p == (q + r); printf("%d", s); }

A. 20
B. 10
C. Compilation Error
D. 1
E. None of these
Answer» E. None of these
Discussion
90.

What will be the output of the following C code?#include <stdio.h> void main() { int n = 12; int num = 2 == 3 && n++; printf("%d %d", num, n); }

A. 12
B. 2
C. 3
D. 0 12
E. 12 0
Answer» E. 12 0
Discussion
91.

What will be the output of the following C code?#include <stdio.h> int main() { int p = 12, q = 6, r = 4; q != !p; r = !!p; printf("%d t%d", q, r); }

A. 4
B. 6
C. 12
D. 6 1
E. 1 6
Answer» E. 1 6
Discussion
92.

What will be the final value of n4 in the following C code?#include <stdio.h> int main() { int n1 = 8, n2 = 4, n3 = 4; int n4; n4 = n2 + n3 == n1; printf("%d", n4); }

A. 8
B. 4
C. 1
D. 0
E. None of these
Answer» D. 0
Discussion
93.

What will be the output of the following C code?#include <stdio.h> int main() { int num = 12; if (num == num--) printf("TRUE 1 t"); num = 10; if (num == --num) printf("TRUE 2 t"); }

A. TRUE 2
B. TRUE 1
C. Compilation Error
D. Runtime Error
E. None of these
Answer» B. TRUE 1
Discussion
94.

What will be the output of the following C code?#include <stdio.h> int main() { int var1 = 16; double var2 = 3.26; int var3; var3 = var1 + var2; printf("%d", var3); }

A. 16
B. 3.26
C. 19
D. Compilation Error
E. None of these
Answer» D. Compilation Error
Discussion
95.

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

A. No
B. Compilation Error
C. 3
D. Yes
E. None of these
Answer» E. None of these
Discussion
96.

What will be the final value of L in the following C code?#include <stdio.h> int main() { int k = 12, L = 0; if (k || (L = k + 12)) //do something ; }

A. 0
B. Nothing
C. 12
D. Compilation Error
E. None of these
Answer» B. Nothing
Discussion
97.

What will be the final value of L in the following C code?#include <stdio.h> int main() { int k = 0, L = 0; if (k && (L = k + 12)) //do something ; }

A. Nothing
B. 0
C. Depends on language standard
D. Depends on the compiler
E. None of these
Answer» C. Depends on language standard
Discussion
98.

What will be the output of the following C code?#include <stdio.h> void main() { int n1 = 1, n2 = 3, n3 = 4; int R = n1 & n2 | n3; printf("%d", R); }

A. 1
B. 2
C. 3
D. 4
E. 5
Answer» F.
Discussion
99.

What will be the output of the following C code?#include <stdio.h> int main() { int n1 = 5, n2 = 0, n3 = 7; n1 > n2 ? printf("%d", n3) : return n3; }

A. 5
B. 7
C. Compilation Error
D. Runtime Error
E. None of these
Answer» D. Runtime Error
Discussion
100.

What will be the output of the following C code?#include <stdio.h> void main() { int num = 0; if (num = 0) { printf("It's zero n"); } else { printf("It's not zero n"); } }

A. Compilation Error
B. It's zero
C. Runtime Error
D. It's not zero
E. None of these
Answer» E. None of these
Discussion