break statement
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使封闭for，while或<div class="t-tr-text">DO-WHILE
的循环或Original:
do-while
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switch语句
终止.Original:
switch statement
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Original:
Causes the enclosing for, while or
DO-WHILE
loop or Original:
do-while
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时使用的终止条件表达式和条件语句的循环使用，否则尴尬.....
Original:
Used when it is otherwise awkward to terminate the loop using the condition expression and conditional statements.
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目录 |
[编辑] 语法
break
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[编辑] 解释
这句话后，控制权转让的声明后立即封闭循环。所有自动存储对象中声明的封闭循环被破坏前的封闭循环之后的第一行的执行.
Original:
After this statement the control is transferred to the statement immediately following the enclosing loop. All automatic storage objects declared in enclosing loop are destroyed before the execution of the first line following the enclosing loop.
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[编辑] 关键字
[编辑] 为例
#include <iostream> int main() { int i = 2; switch (i) { case 1: std::cout << "1"; case 2: std::cout << "2"; //execution starts at this case label case 3: std::cout << "3"; case 4: case 5: std::cout << "45"; break; //execution of subsequent statements is terminated case 6: std::cout << "6"; } std::cout << '\n'; for (int j = 0; j < 2; j++) { for (int k = 0; k < 5; k++) { //only this loop is affected by break if (k == 2) break; std::cout << j << k << " "; } } }
Output:
2345 00 01 10 11
