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for loop

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for loop
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Executa um loop.
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Executes a loop.
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.

Índice

[editar] Sintaxe

for ( init_expression ; cond_expression ; iteration_expression ) loop_statement

[editar] Explicação

A sintaxe acima produz o equivalente a codificar:
Original:
The above syntax produces code equivalent to:
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{
init_expression ;
while ( cond_exression ) {
loop_statement
iteration_expression ;
}

}

O init_expression é executado antes da execução do loop. O cond_expression deve avaliar em valor, conversível a bool. Ela é avaliada antes de cada iteração do loop. O loop continua somente se seu valor é true. O loop_statement é executado em cada iteração, após o que é executada iteration_expression.
Original:
The init_expression is executed before the execution of the loop. The cond_expression shall evaluate to value, convertible to bool. It is evaluated before each iteration of the loop. The loop continues only if its value is true. The loop_statement is executed on each iteration, after which iteration_expression is executed.
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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,
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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,
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[editar] Palavras-chave

for

[editar] Exemplo

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

Output:

0 1 2 3 4 5 6 7 8 9
2 4 6 8