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Führt eine Schleife .
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Executes a loop.
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.

Inhaltsverzeichnis

[Bearbeiten] Syntax

for ( init_expression ; cond_expression ; iteration_expression ) loop_statement

[Bearbeiten] Erklärung

Die obige Syntax erzeugt Code äquivalent zu:
Original:
The above syntax produces code equivalent to:
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{
init_expression ;
while ( cond_exression ) {
loop_statement
iteration_expression ;
}

}

Die init_expression wird vor der Ausführung der Schleife ausgeführt. Die cond_expression wird auf den Wert zu beurteilen, umwandelbar in bool. Es wird vor jeder Iteration der Schleife ausgewertet. Die Schleife wird nur, wenn ihr Wert true ist. Die loop_statement auf jeder Iteration ausgeführt, wonach iteration_expression ausgeführt wird .
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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als beendende Anweisung verwendet werden .
Original:
If the execution of the loop needs to be terminated at some point,
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als Abkürzung verwendet werden .
Original:
If the execution of the loop needs to be continued at the end of the loop body,
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[Bearbeiten] Keywords

for

[Bearbeiten] Beispiel

#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