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Loops Interview Questions

MCQ Question 1 of 10

Question 1: For Loop Iterations

How many times does the loop run in for (int i = 0; i < 10; i++)?

Infinite

Question 2: While Loop Condition

Which statement about the while loop is true?

It executes at least once.

It may never execute if condition is false initially.

It always executes exactly once.

It executes infinitely.

Question 3: Do-While Loop

What is the key difference between a while and a do-while loop?

Do-while is faster than while.

While loop executes at least once.

Do-while loop executes at least once, even if condition is false.

Both are identical.

Question 4: Break Statement

What does the break statement do inside a loop?

Skips the current iteration

Exits the loop immediately

Ends the program

Repeats the loop

Question 5: Continue Statement

What does the continue statement do inside a loop?

Ends the loop

Exits the program

Skips the current iteration and continues with the next one

Restarts the program

Question 6: For Loop Output

What will be printed?

#include <stdio.h>

int main() {
    for (int i = 1; i <= 3; i++) {
        printf("%d ", i);
    }
    return 0;
}

1 2 3

0 1 2

1 2 3 4

Infinite

Question 7: While Loop Execution

What will be the output?

#include <stdio.h>

int main() {
    int i = 0;
    while (i < 3) {
        printf("Hi ");
        i++;
    }
    return 0;
}

Hi Hi

Hi Hi Hi

Infinite Hi

Question 8: Nested Loop

If an outer loop runs 5 times and an inner loop runs 4 times, how many total iterations occur?

Question 9: Infinite Loop

Which of these will create an infinite loop?

for (int i = 0; i < 5; i++)

while (1)

do { } while (0);

for (i = 0; i < 10; i++)

Question 10: Loop Control

Which loop is best suited when the number of iterations is known in advance?

While loop

Do-while loop

For loop

Infinite loop