Do-While Loops: Execute Before Check

Snippet

Do-While Loops: Execute Before Check

The do-while loop guarantees at least one execution of the loop body. The condition is checked AFTER each iteration, unlike while loops which check first. This is useful when you need to prompt for input at least once.

snippet.cpp
cpp
#include <iostream>
 
 
int main() {
    int guess;
    
    do {
        std::cout << "Enter a number: ";
        std::cin >> guess;
    } while (guess != 42);
    
    std::cout << "Correct!" << std::endl;
    return 0;
}

Breakdown

do {

Starts the do-while loop, body executes first

} while (guess != 42);

Condition checked after body runs - loop repeats if condition is true

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Do-While Loops: Execute Before Check

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