Learn C MCQs
Prepare C MCQs (Multiple choice Questions) for exam and job interviews.
Which of the following is a valid way to declare an array of 5 floats?
1) float arr[5];
2) float arr();
3) float arr = {1.0, 2.0};
4) None of the above
Answer : Option 1
What is the purpose of the `break` statement in a loop?
1) To exit the loop
2) To continue to the next iteration
3) To skip the current iteration
4) None of the above
Answer : Option 1
Which of the following will not compile in C?
1) int x = 10;
2) int 1x = 10;
3) float y = 5.5;
4) char c = 'A';
Answer : Option 2
What is the output of printf("%d", 9 % 4);?
1) 2
2) 1
3) 3
4) 0
Answer : Option 2
Which of the following is used for dynamic memory allocation in C?
1) malloc()
2) alloc()
3) new
4) None of the above
Answer : Option 1
What will be the output of printf("%d", 5 + 3 * 2 - 4);?
1) 9
2) 6
3) 4
4) 5
Answer : Option 2
Which of the following statements is used to include a header file?
1) #include
2) #include header
3) import header
4) require header
Answer : Option 1
What is the purpose of the `continue` statement in a loop?
1) To exit the loop
2) To skip to the next iteration
3) To break out of the loop
4) None of the above
Answer : Option 2
What will be the output of printf("%d", 3 * 5 - 4);?
1) 11
2) 7
3) 15
4) 12
Answer : Option 1
Which of the following is a valid pointer declaration?
1) int *ptr;
2) ptr int*;
3) *ptr int;
4) int * ptr;
Answer : Option 1