while loop
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Excute une boucle .
Original:
Executes a loop.
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Utilis lorsque le code doit tre excut plusieurs fois tant qu'une condition est prsent .
Original:
Used where code needs to be executed several times while some condition is present.
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Syntaxe
while ( cond_expression ) loop_statement
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Explication
cond_expression doit tre une expression dont le rsultat est convertible en
bool. Il est value avant chaque excution de loop_statement, qui est excute seulement si le cond_expression value 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.The text has been machine-translated via Google Translate.
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Si l'excution de la boucle doit tre mis fin un certain moment,
instruction break
peut tre utilis comme terminaison dclaration . Original:
break statement
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Original:
If the execution of the loop needs to be terminated at some point,
instruction break
can be used as terminating statement. Original:
break statement
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Si l'excution de la boucle doit tre poursuivie la fin de la boucle,
instruction continue
peut tre utilis comme raccourci .Original:
continue statement
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Original:
If the execution of the loop needs to be continued at the end of the loop body,
instruction continue
can be used as shortcut.Original:
continue statement
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Mots-cls
Exemple
#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;
}
}
Rsultat :
10
2 4 6 8