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for loop

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Lenguaje C++
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Control de flujo
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Flow control
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Sentencias condicionales ejecución
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Conditional execution statements
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Instrucciones de iteración
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Iteration statements
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for loop
range-for loop (C++11)
Ir declaraciones
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Exceptions
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Types
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decltype specifier (C++11)
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Inicialización
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Initialization
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Los literales
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representaciones alternativas
Utilidades
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Types
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Funciones especiales miembro
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Plantillas
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Varios
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Miscellaneous
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Montaje en línea
 
Ejecuta un bucle .
Original:
Executes a loop.
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.

Contenido

[editar] Sintaxis

for ( init_expression ; cond_expression ; iteration_expression ) loop_statement

[editar] Explicación

La sintaxis anterior produce código equivalente a:
Original:
The above syntax produces code equivalent to:
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{
init_expression ;
while ( cond_exression ) {
loop_statement
iteration_expression ;
}

}

El init_expression se ejecuta antes de la ejecución del bucle. El cond_expression evaluará a valorar, convertible a bool. Se evalúa antes de cada iteración del bucle. El bucle continúa sólo si su valor es true. El loop_statement se ejecuta en cada iteración, después de lo cual se ejecuta 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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se puede utilizar como la terminación de declaración .
Original:
If the execution of the loop needs to be terminated at some point,
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se puede utilizar como acceso directo .
Original:
If the execution of the loop needs to be continued at the end of the loop body,
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[editar] Palabras clave

for

[editar] Ejemplo

#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