Break u0026 Continue in Loops: Control in Action Quiz Quiz

Sharpen your understanding of break and continue statements in loops with this focused quiz. Explore how these control flow tools affect loop execution, handle special cases, and improve code efficiency in programming.

1. Break Statement Usage

   In a while loop that prints numbers 1 to 10, which statement will immediately exit the loop when the current number equals 5?

   1. exit
   2. break
   3. stop
   4. continue

   Explanation: The 'break' statement exits the loop entirely as soon as the specified condition is met, halting further iterations. 'continue' would skip only the current iteration instead of exiting the loop. 'exit' and 'stop' are not valid ways to break out of a loop in this context, making them incorrect.

2. Continue Statement in For Loops

   Given a for loop iterating over numbers 1 to 5, which statement will skip printing the number 3, but continue printing others?

   1. break
   2. repeat
   3. continue
   4. stop

   Explanation: The 'continue' statement skips the current loop iteration and moves to the next one, effectively leaving out number 3 from being printed while continuing. 'break' would completely exit the loop instead of skipping one iteration. 'stop' and 'repeat' are both invalid in this context and will not work as intended.

3. Multiple Loops with Break

   In nested loops, what is the effect of a break statement inside the inner loop?

   1. It stops all loops and ends program execution
   2. It exits only the inner loop and resumes with the next iteration of the outer loop
   3. It skips the current iteration of the inner loop but continues it
   4. It restarts the inner loop from the beginning

   Explanation: A break statement inside the inner loop will only terminate the execution of that loop, after which control moves to the next iteration of the outer loop. It does not end the entire program, so option two is wrong. Option three describes the continue statement, not break. Option four is not how break operates in nested loops.

4. Using Continue with Conditions

   How can a continue statement be combined with a conditional to skip even numbers in a loop printing values 1 to 6?

   1. Add continue outside any conditions.
   2. Use break when an even number is found.
   3. Use continue after printing each number.
   4. If the number is even, use continue before printing.

   Explanation: Placing continue inside a condition that checks for even numbers causes those iterations to skip the print statement, omitting even numbers from output. Running continue after printing still prints all values. Break would terminate the loop prematurely, and using continue without a condition would skip every number or cause logical issues.

5. Break vs Continue: Control Flow Effects

   What is the main difference between break and continue statements within loops?

   1. Break and continue perform exactly the same action
   2. Both break and continue exit the loop but at different points
   3. Break exits the loop entirely, while continue skips to the next iteration
   4. Continue exits the loop entirely, while break skips an iteration

   Explanation: Break ends the loop at once, while continue only skips the rest of the current iteration and continues looping. The second option misrepresents their behaviors, as only break exits the whole loop. Option three has their roles switched, and the last option is incorrect as these statements serve different purposes.