do-while loop — cppreference.com

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Exécute une boucle .

Original:

Executes a loop.

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Utilisé lorsque le code doit être exécuté plusieurs fois tant qu'une condition est présente. le code est exécuté au moins une fois .

Original:

Used where code needs to be executed several times while some condition is present. the code is executed at least once.

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Syntaxe


`do` loop_statement `while (` cond_expression `)`

Explication

cond_expression doit être une expression dont le résultat est convertible en bool. Il est évalué après chaque exécution de loop_statement. La boucle continue l'exécution que si la cond_expression évalue à true .

Original:

cond_expression shall be an expression, whose result is convertible to bool. It is evaluated after each execution of loop_statement. The loop continues execution only if the cond_expression evaluates to true.

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Mots-clés

do, while

Exemple

#include <iostream>

int main()
{
    int i = 0;
    do i++;
    while (i < 10);
    
    std::cout << i << '\n';
    
    i = 11;
    do i = i + 10;
    while (i < 10); //the code is executed even if the condition is false before the loop
    
    std::cout << i << '\n';
    
    int j = 2;
    do {
        j += 2;
        std::cout << j << " ";
    } while (j < 9);
}

Résultat :