Test: Loops - 1 - Software Development MCQ

Loops are used when we want to repeat a block of code multiple times until a certain condition is met.

The while loop is most suitable when the number of iterations is unknown because it executes a block of code repeatedly based on a condition.

The initial condition in a while loop is specified after the keyword "while."

The do-while loop guarantees that the loop body will be executed at least once because the condition is checked at the end of the loop.

The code will print the values of 'i' from 0 to 4 because the condition 'i < 5' is true for those values.

The for loop is commonly used to iterate over an array in Java.

The for loop is best suited when the number of iterations is known in advance because it provides a concise way to specify the initialization, condition, and increment/decrement in a single line.

The code will print the values of 'i' from 10 to 1 because the condition 'i > 0' is true for those values.

The do-while loop allows the loop body to be executed at least once because the condition is checked at the end of the loop.

The condition in a do-while loop is specified after the keyword "do."

The code initializes 'x' as 5 and prints its value in each iteration while decrementing it by 2. The loop terminates when 'x' becomes 1.

The code prints the values of 'i' from 0 to 4 because the condition 'i < 5' is true for those values.

The code prints the values of 'n' from 3 to 1 because the condition 'i < n' is true for those values. The loop terminates when 'i' becomes 3, and the condition becomes false.

The code starts with 'i' as 10 and continues decrementing it until it becomes 5. The loop terminates when 'i' becomes 5, and the value of 'i' is printed.

The code initializes 'i' as 5 and continues decrementing it until it becomes 0. The loop terminates when 'i' becomes 0, and the value of 'i' is printed.

The code initializes 'i' as 0 and calculates the sum of 'i' in each iteration until 'i' becomes 5. The final sum will be 0 + 1 + 2 + 3 + 4 = 10.

The code initializes 'i' as 5 and prints its value in each iteration while decrementing it by 2. The loop terminates when 'i' becomes 1.

The code starts with 'x' as 5 and prints its value in each iteration while incrementing it by 1. The loop terminates when 'x' becomes 10, and the condition becomes false.

The code initializes 'i' as 1 and calculates the sum of 'i' from 1 to 10 using the compound assignment operator '+='. The final sum will be 1 + 2 + 3 + ... + 10 = 55.

The code initializes 'i' as 0 and prints its value in each iteration while incrementing it by 2. The loop terminates when 'i' becomes 6, and the condition becomes false.