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do-while loop

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while loop
do-while loop
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Executa um loop.
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Executes a loop.
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Usado onde o código precisa ser executado várias vezes enquanto alguma condição está presente. o código é executado pelo menos uma vez.
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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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Índice

[editar] Sintaxe

do loop_statement while ( cond_expression )

[editar] Explicação

cond_expression deve ser uma expressão, cujo resultado é convertível para bool. Ele é avaliada após cada execução de loop_statement. O laço continua a execução somente se o cond_expression avalia true.
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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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pode ser usado como indicação de terminação.
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If the execution of the loop needs to be terminated at some point,
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pode ser usado como atalho.
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If the execution of the loop needs to be continued at the end of the loop body,
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[editar] Palavras-chave

do, while

[editar] Exemplo

#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);
}

Output:

10
21
4 6 8 10