C Programming Control Structures Quiz

What is the correct syntax for a `while` loop in C?

• `while (condition) { // code }`

• `while { condition } ( // code )`

• `loop while (condition) { // code }`

• `while condition { // code }`

Which keyword is used to exit a loop immediately in C?

• `exit`

• `stop`

• `break`

• `return`

What is the output of the following code? ```c int i = 0; do { printf("%d ", i); i++; } while (i < 3); ```

• `0 1 2 3`

• `1 2 3`

• `0 1 2`

• `0 1 2 3 4`

Which of the following is the correct syntax for an `if-else` statement in C?

• `if (condition) { } else { }`

• `if condition { } else { }`

• `if (condition) then { } else { }`

• `if { condition } else { }`

What does the `continue` statement do in a loop in C?

• Terminates the loop entirely

• Skips the current iteration and moves to the next iteration

• Restarts the loop from the beginning

• Pauses the loop execution

Analyze the following code. What will be the final value of `sum` after execution? ```c int sum = 0; for (int i = 1; i <= 10; i++) { if (i % 2 == 0) continue; sum += i; } ```

• `55`

• `30`

• `25`

• `20`

Consider the following nested loop. How many times will `printf` execute? ```c for (int i = 0; i < 3; i++) { for (int j = i; j < 3; j++) { printf("*"); } } ```

• `9`

• `6`

• `3`

• `12`

What will be the output of the following code involving a `switch` statement? ```c int x = 2; switch (x) { case 1: printf("One"); case 2: printf("Two"); case 3: printf("Three"); default: printf("Default"); } ```

• `Two`

• `TwoThree`

• `TwoThreeDefault`

• `Default`

Examine the following code. What is the output? ```c int x = 5; if (x > 3) { if (x > 4) printf("A"); else printf("B"); } else { printf("C"); } ```

• `B`

• `C`

• `AB`

• `A`

What will be the output of the following code? ```c int count = 0; for (int i = 0; i < 5; i++) { for (int j = 0; j < 5; j++) { if (i == j) break; count++; } } printf("%d", count); ```

• `25`

• `15`

• `10`

• `20`