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do-while loop

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while loop
do-while loop
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執行一個循環.....
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目錄

[编辑] 語法

do loop_statement while ( cond_expression )

[编辑] 解釋

cond_expression應該是一個表達式，其結果是轉換為bool。評估後，每次執行loop_statement。循環繼續執行，只有當cond_expression評估true.
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cond_expression shall be an expression, whose result is convertible to bool. It is evaluated after each execution of loop_statement. The loop continues execution only if the cond_expression evaluates to true.
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如果循環執行的，在某些時候，需要終止，<div class="t-tr-text"> break語句
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break statement
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​​可以用作終止聲明.
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If the execution of the loop needs to be terminated at some point,
break語句
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break statement
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</div> can be used as terminating statement.
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如果需要繼續執行循環在循環體的末尾，<div class="t-tr-text"> continue語句
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continue statement
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可以用作快捷.
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If the execution of the loop needs to be continued at the end of the loop body,
continue語句
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continue statement
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</div> can be used as shortcut.
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[编辑] 關鍵字

do, while

[编辑] 為例

#include <iostream>
 
int main()
{
    int i = 0;
    do i++;
    while (i < 10);
 
    std::cout << i << '\n';
 
    i = 11;
    do i = i + 10;
    while (i < 10); //the code is executed even if the condition is false before the loop
 
    std::cout << i << '\n';
 
    int j = 2;
    do {
        j += 2;
        std::cout << j << " ";
    } while (j < 9);
}

Output: 

10
21
4 6 8 10
来自“http://zh.cppreference.com/mwiki/index.php?title=cpp/language/do&oldid=28902”