计算程序运行时间（C&C++版）

C++版

#include
#include
int main()
{
    clock_t start_time=clock();
    {
        //被测试代码
    }
    clock_t end_time=clock();
    cout<< "Running time is: "<(end_time-start_time)/CLOCKS_PER_SEC*1000<<"ms"<

C语言版

#include
#include
int main()
{
  double start=clock();
    {
        //被测试代码
    }
    double end=clock();
    printf( "\nRunning time is: ");
    printf("%fms",(double)(end-start)/CLOCKS_PER_SEC*1000);
   
    return 0;

}