C Language Loop and Array Quiz

Which of the following is a correct syntax for a for loop in C?

• for (int i = 0; i < n; i++)

• for int i = 0; i < n; i++

• for (int i = 0; i < n)

• for (int i = 0; i++)

What happens when the condition in a do-while loop is initially false?

• Infinite loop

• The loop does not execute

• Compilation error

• The loop executes once

What is the purpose of the second statement in a for loop?

• To initialize the loop variable

• To specify the condition to continue the loop

• To update the loop variable

• To execute the loop body

Which keyword is used to skip the current iteration of a loop in C?

• break

• return

• continue

• goto

What will happen if there is no update statement in a for loop?

• The loop will not execute

• Compilation error

• The loop will execute infinitely if the condition is true

• Undefined behavior

Which of the following correctly initializes a loop variable and ensures it executes exactly 5 times?

• for (int i = 0; i <= 5; i++)     

• while (int i <= 5)

• for (int i = 1; i <= 5; i++)

• do { ... } while (i < 5)

What will be the output of the following code?

    int i = 0;

    while (i < 5) {

        printf("%d ", i);

        i++;

    }

• 0 1 2 3 4

• 1 2 3 4 5

• 0 1 2 3 4 5

• Infinite loop

What will the following code output?

int i = 10;

while (i < 10) {

 printf("%d ", i);

}

• 10

• No output

• Infinite loop

• Compilation error

What will be the output of this code snippet?

int i = 10;

while (i > 5) {

  printf("%d ", --i);

}

• 10 9 8 7 6

• 9 8 7 6 5

• 9 8 7 6

• Infinite loop

What is the value of count after the following loop?

int count = 0;

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

    for (int j = 0; j < 3; j++) {

        count++;

    }

}

• 5

• 8

• 15

• 10