clock_t
来自cppreference.com
| 定义于头文件 <time.h>
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| typedef /* unspecified */ clock_t; |
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足以表示进程所用的处理器时间的算术 (C11 前)实数 (C11 起)类型。它拥有实现定义的范围和精度。
[编辑] 示例
运行此代码
#include <stdio.h> #include <time.h> volatile unsigned sink; int main (void) { clock_t start = clock(); for(size_t i=0; i<10000000; ++i) sink++; clock_t end = clock(); double cpu_time_used = ((double) (end - start)) / CLOCKS_PER_SEC; printf("for loop took %f seconds to execute \n", cpu_time_used); }
可能的输出：
for loop took 0.033492 seconds to execute
