Espaços nominais
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while loop

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C++
 
Linguagem C++
Tópicos gerais
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Controle de fluxo
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Flow control
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Declarações execução condicional
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Conditional execution statements
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Instruções de iteração
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Iteration statements
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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.
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Used where code needs to be executed several times while some condition is present.
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Índice

[editar] Sintaxe

while ( cond_expression ) loop_statement

[editar] Explicação

cond_expression deve ser uma expressão, cujo resultado é convertível para bool. Ela é avaliada antes de cada execução de loop_statement, que só é executado se a cond_expression avalia true.
Original:
cond_expression shall be an expression, whose result is convertible to bool. It is evaluated before each execution of loop_statement, which is only executed if the cond_expression evaluates to true.
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Se a execução do ciclo deve ser terminada em algum ponto, <div class="t-tr-text"> quebrar comunicado
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break statement
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pode ser usado como indicação de terminação.
Original:
If the execution of the loop needs to be terminated at some point,
quebrar comunicado
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break statement
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</div> can be used as terminating statement.
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Se a execução do ciclo deve ser mantido na extremidade do corpo do ciclo, <div class="t-tr-text"> continuar comunicado
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continue statement
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pode ser usado como atalho.
Original:
If the execution of the loop needs to be continued at the end of the loop body,
continuar comunicado
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continue statement
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</div> can be used as shortcut.
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[editar] Palavras-chave

while

[editar] Exemplo

#include <iostream>
 
int main()
{
    int i = 0;
    while (i < 10) i++;
 
    std::cout << i << '\n';
 
    int j = 2;
    while (j < 9) {
        std::cout << j << " ";
        j += 2;
    }
}

Saída: 

10
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