Explore topic-wise MCQs in C Programming.

This section includes 44 Mcqs, each offering curated multiple-choice questions to sharpen your C Programming knowledge and support exam preparation. Choose a topic below to get started.

1.

The expression of the right hand side of operators doesn't get evaluated if the left hand side determines the outcome.

A. True
B. False
Answer» B. False
Discussion
2.

In the expression the order of Assignment is NOT decided by Associativity of operators

A. True
B. False
Answer» C.
Discussion
3.

Are the following two statement same?

A. Yes
B. No
Answer» C.
Discussion
4.

Will the expression be disallowed by the compiler?

A. Yes
B. No
Answer» C.
Discussion
5.

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

A. * / % + - =
B. = * / % + -
C. / * % - + =
D. * % / - + =
Answer» B. = * / % + -
Discussion
6.

In which order do the following gets evaluated

A. 2134
B. 1234
C. 4321
D. 3214
Answer» B. 1234
Discussion
7.

Which of the following is the correct order if calling functions in the below code?

A. f1, f2, f3
B. f3, f2, f1
C. Order may vary from compiler to compiler
D. None of above
Answer» D. None of above
Discussion
8.

Which of the following are unary operators in C?

A. 1, 2
B. 1, 3
C. 2, 4
D. 1, 2, 3
Answer» E.
Discussion
9.

What will be the output of the program?_x000D_ #include_x000D_ int main()_x000D_ {_x000D_ int i=4, j=-1, k=0, w, x, y, z;_x000D_ w = i || j || k;_x000D_ x = i && j && k;_x000D_ y = i || j &&k;_x000D_ z = i && j || k;_x000D_ printf("%d, %d, %d, %d\n", w, x, y, z);_x000D_ return 0;_x000D_ }

A. 1, 1, 1, 1
B. 1, 1, 0, 1
C. 1, 0, 0, 1
D. 1, 0, 1, 1
Answer» E.
Discussion
10.

What will be the output of the program?_x000D_ #include_x000D_ int main()_x000D_ {_x000D_ int x=12, y=7, z;_x000D_ z = x!=4 || y == 2;_x000D_ printf("z=%d\n", z);_x000D_ return 0;_x000D_ }

A. z=0
B. z=1
C. z=4
D. z=2
Answer» C. z=4
Discussion
11.

What will be the output of the program?_x000D_ #include_x000D_ int main()_x000D_ {_x000D_ int a=100, b=200, c;_x000D_ c = (a == 100 || b > 200);_x000D_ printf("c=%d\n", c);_x000D_ return 0;_x000D_ }

A. c=100
B. c=200
C. c=1
D. c=300
Answer» D. c=300
Discussion
12.

What will be the output of the program?_x000D_ #include_x000D_ int main()_x000D_ {_x000D_ int i=2;_x000D_ int j = i + (1, 2, 3, 4, 5);_x000D_ printf("%d\n", j);_x000D_ return 0;_x000D_ }

A. 4
B. 7
C. 6
D. 5
Answer» C. 6
Discussion
13.

What will be the output of the program?_x000D_ #include_x000D_ int main()_x000D_ {_x000D_ int i=-3, j=2, k=0, m;_x000D_ m = ++i || ++j && ++k;_x000D_ printf("%d, %d, %d, %d\n", i, j, k, m);_x000D_ return 0;_x000D_ }

A. 2, 2, 0, 1
B. 1, 2, 1, 0
C. -2, 2, 0, 0
D. -2, 2, 0, 1
Answer» E.
Discussion
14.

What will be the output of the program?_x000D_ #include_x000D_ int main()_x000D_ {_x000D_ int i=-3, j=2, k=0, m;_x000D_ m = ++i && ++j || ++k;_x000D_ printf("%d, %d, %d, %d\n", i, j, k, m);_x000D_ return 0;_x000D_ }

A. 1, 2, 0, 1
B. -3, 2, 0, 1
C. -2, 3, 0, 1
D. 2, 3, 1, 1
Answer» D. 2, 3, 1, 1
Discussion
15.

What will be the output of the program?_x000D_ #include_x000D_ int main()_x000D_ {_x000D_ int i=-3, j=2, k=0, m;_x000D_ m = ++i && ++j && ++k;_x000D_ printf("%d, %d, %d, %d\n", i, j, k, m);_x000D_ return 0;_x000D_ }

A. -2, 3, 1, 1
B. 2, 3, 1, 2
C. 1, 2, 3, 1
D. 3, 3, 1, 2
Answer» B. 2, 3, 1, 2
Discussion
16.

Which of the following is the correct order if calling functions in the below code?_x000D_ a = f1(23, 14) * f2(12/4) + f3();

A. f1, f2, f3
B. f3, f2, f1
C. Order may vary from compiler to compiler
D. None of above
Answer» D. None of above
Discussion
17.

What will be the output of the program? #include int main() { int i=2; int j = i + (1, 2, 3, 4, 5); printf("%d\n", j); return 0; }

A. 4
B. 7
C. 6
D. 5
Answer» C. 6
Discussion
18.

What will be the output of the program? #include 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. 1, 2, 0, 1
B. -3, 2, 0, 1
C. -2, 3, 0, 1
D. 2, 3, 1, 1
Answer» D. 2, 3, 1, 1
Discussion
19.

What will be the output of the program? #include int main() { int i=3; i = i++; printf("%d\n", i); return 0; }

A. 3
B. 4
C. 5
D. 6
Answer» C. 5
Discussion
20.

What will be the output of the program? #include int main() { int x=4, y, z; y = --x; z = x--; printf("%d, %d, %d\n", x, y, z); return 0; }

A. 4, 3, 3
B. 4, 3, 2
C. 3, 3, 2
D. 2, 3, 3
Answer» E.
Discussion
21.

What will be the output of the program? #include int main() { char ch; ch = 'A'; printf("The letter is"); printf("%c", ch >= 'A' && ch <= 'Z' ? ch + 'a' - 'A':ch); printf("Now the letter is"); printf("%c\n", ch >= 'A' && ch <= 'Z' ? ch : ch + 'a' - 'A'); return 0; }

A. The letter is aNow the letter is A
B. The letter is ANow the letter is a
C. Error
D. None of above
Answer» B. The letter is ANow the letter is a
Discussion
22.

What will be the output of the program? #include int main() { int a=100, b=200, c; c = (a == 100 || b > 200); printf("c=%d\n", c); return 0; }

A. c=100
B. c=200
C. c=1
D. c=300
Answer» D. c=300
Discussion
23.

What will be the output of the program? #include int main() { int k, num=30; k = (num>5 ? (num <=10 ? 100 : 200): 500); printf("%d\n", num); return 0; }

A. 200
B. 30
C. 100
D. 500
Answer» C. 100
Discussion
24.

What will be the output of the program? #include int main() { int i=2; printf("%d, %d\n", ++i, ++i); return 0; }

A. 3, 4
B. 4, 3
C. 4, 4
D. Output may vary from compiler to compiler
Answer» E.
Discussion
25.

The expression of the right hand side of || operators doesn't get evaluated if the left hand side determines the outcome.

A. 1
B.
Answer» B.
Discussion
26.

Two different operators would always have different Associativity.

A. Yes
B. No
Answer» C.
Discussion
27.

Will the expression *p = p be disallowed by the compiler?

A. Yes
B. No
Answer» C.
Discussion
28.

What will be the output of the program? #include int main() { static int a[20]; int i = 0; a[i] = i ; printf("%d, %d, %d\n", a[0], a[1], i); return 0; }

A. 1, 0, 1
B. 1, 1, 1
C. 0, 0, 0
D. 0, 1, 0
Answer» D. 0, 1, 0
Discussion
29.

What will be the output of the program? #include int main() { int x=12, y=7, z; z = x!=4 || y == 2; printf("z=%d\n", z); return 0; }

A. z=0
B. z=1
C. z=4
D. z=2
Answer» C. z=4
Discussion
30.

What will be the output of the program? #include 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
Answer» E.
Discussion
31.

Every operator has an Associativity

A. Yes
B. No
Answer» B. No
Discussion
32.

What will be the output of the program? #include int main() { int x=55; printf("%d, %d, %d\n", x<=55, x=40, x>=10); return 0; }

A. 1, 40, 1
B. 1, 55, 1
C. 1, 55, 0
D. 1, 1, 1
Answer» B. 1, 55, 1
Discussion
33.

Associativity of an operator is either Left to Right or Right to Left.

A. 1
B.
Answer» B.
Discussion
34.

In the expression a=b=5 the order of Assignment is NOT decided by Associativity of operators

A. 1
B.
Answer» C.
Discussion
35.

What will be the output of the program? #include int main() { int i=4, j=-1, k=0, w, x, y, z; w = i || j || k; x = i && j && k; y = i || j &&k; z = i && j || k; printf("%d, %d, %d, %d\n", w, x, y, z); return 0; }

A. 1, 1, 1, 1
B. 1, 1, 0, 1
C. 1, 0, 0, 1
D. 1, 0, 1, 1
Answer» E.
Discussion
36.

Assuming, integer is 2 byte, What will be the output of the program? #include int main() { printf("%x\n", -2<<2); return 0; }

A. ffff
B. 0  
C. fff8
D. Error
Answer» D. Error
Discussion
37.

What will be the output of the program? #include 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, 3, 1, 1
B. 2, 3, 1, 2
C. 1, 2, 3, 1
D. 3, 3, 1, 2
Answer» B. 2, 3, 1, 2
Discussion
38.

In which order do the following gets evaluated 1. Relational 2. Arithmetic 3. Logical 4. Assignment

A. 2134
B. 1234
C. 4321
D. 3214
Answer» B. 1234
Discussion
39.

Are the following two statement same? 1. a <= 20 ? (b = 30): (c = 30); 2. (a <=20) ? b : (c = 30);

A. Yes
B. No
C. Yes
D. No
Answer» C. Yes
Discussion
40.

Which of the following are unary operators in C? 1. ! 2. sizeof 3. ~ 4. &&

A. 1, 2
B. 1, 3
C. 2, 4
D. 1, 2, 3
Answer» E.
Discussion
41.

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)
Answer» D. return (a>b)?(a:b)
Discussion
42.

Associativity has no role to play unless the precedence of operator is same.

A. 1
B.
C. 1
D.
Answer» B.
Discussion
43.

Which of the following is the correct order if calling functions in the below code? a = f1(23, 14) * f2(12/4) + f3();

A. f1, f2, f3
B. f3, f2, f1
C. Order may vary from compiler to compiler
D. None of above
Answer» D. None of above
Discussion
44.

Which of the following is the correct order of evaluation for the below expression?z = x + y * z / 4 % 2 - 1

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