Explore topic-wise MCQs in Testing Subject.

This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.

1.

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
2.

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
3.

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
4.

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
5.

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
6.

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
7.

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
8.

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
9.

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
10.

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
11.

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
12.

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
13.

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
14.

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
15.

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
16.

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
17.

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
18.

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
19.

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
20.

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
21.

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
22.

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
23.

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
24.

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
25.

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
26.

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
27.

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
28.

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
29.

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
30.

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
31.

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
32.

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
33.

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
34.

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
35.

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
36.

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
37.

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
38.

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
39.

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
40.

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
41.

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
42.

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
43.

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
44.

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
45.

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
46.

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
47.

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
48.

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
49.

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
50.

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