Linux应用程序开发笔记：测试代码执行时间

#include <stdio.h>
#include <sys/times.h>
#include <unistd.h> 


void main(void)
{
    double duration;
    clock_t start, finish;

    start = clock();

    //code

    finish = clock();

    duration = (double)(finish - start) / CLOCKS_PER_SEC;
    
    printf( "%f seconds\n", duration  );       
}