C++ 关键字： for
来自 cppreference.com
[编辑] 用法
- for 循环：作为循环的声明
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(自 C++11 起) |
[编辑] 示例
运行此代码
#include <iostream> int main() noexcept { // The following 'for' loop statement: // 1. (init-statement) Declares an integer named 'i' and initializes it with value '0'. // 2. (condition) Checks if i is less than 3 and if not, ends the loop execution. // 3. (statement) Writes out a current value of the integer 'i' to the stdout. // 4. (expression) Pre-increments the integer 'i' (increases its value by 1). // 5. Returns to the point 2 (condition). // init-statement: int i{0}; // condition: i < 3 for (int i{0}; i < 3; ++i) // expression: ++i std::cout << i; // statement: std::cout << i; }
输出
012
[编辑] 另请参阅
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(自 C++17 起) |
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(自 C++23 起) |
- switch 语句：
switch，case - default (作为 case 标签声明) 等：
default - goto 语句：
goto - continue 语句：
continue - break 语句：
break - return 语句：
return
| (自 C++20 起) |
