Do While Loop: A Detailed Explanation with Examples
The 'do-while' loop is a type of loop structure that shares similarities with the 'while' loop. However, the key distinction lies in the execution order. A 'do-while' loop executes the code within its body first, and only then checks if the loop condition is met. If the condition is true, the loop continues; if it's false, the loop terminates.
The general syntax of a 'do-while' loop is:
do {
// Loop body code
} while (condition);
- The 'do' keyword marks the beginning of the loop.
- The loop body code is the code between 'do' and 'while', and it's guaranteed to execute at least once.
- The 'while' keyword is followed by a loop condition. The loop continues as long as the condition is true; when the condition becomes false, the loop ends.
Unlike 'while' loops, 'do-while' loops ensure that the loop body code runs at least once before evaluating the loop condition. This structure is ideal for scenarios where you need to execute the loop body code initially, and then determine if subsequent iterations are necessary based on a condition.
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