一个计算程序运行耗时的代码段
1
#include "time.h"
2
3// 时间变量与时间函数
4clock_t tstart = 0;
5
6
7void Settime()
8
{
9
tstart = clock();
10
}
11
12
13double Gettime()
14 {
15 return (double)((double)clock() - (double)tstart)/(double)CLOCKS_PER_SEC;
16}
17
18
19
20int main()
21{
22 Settime();//开始计时
23
/****
24
do something ****/
25
26 cout << "-->监视耗时 : " ;
27 cout << Gettime()<< endl ;
28
29 return 1;
30}
#include "time.h"2
3
// 时间变量与时间函数4
clock_t tstart = 0; 5
6
7
void Settime()8
{ 
9
tstart = clock(); 10
}11
12
13
double Gettime()14
{15
return (double)((double)clock() - (double)tstart)/(double)CLOCKS_PER_SEC; 16
}17
18
19
20
int main()21
{22
Settime();//开始计时23
/****
24
do something ****/25
26
cout << "-->监视耗时 : " ;27
cout << Gettime()<< endl ;28
29
return 1;30
}