算出代码运行时间

 1 #include <bits/stdc++.h>
 2 #define maxn 1000005
 3 
 4 typedef long long ll;
 5 
 6 using namespace std;
 7 
 8 clock_t start,stop;
 9 
10 ll a[maxn];
11 void kk()
12 {
13     for(int i = 1; i <= 1000000; i ++)
14     {
15         a[i] = i;
16     }
17 }
18 int main()
19 {
20     double t;
21     start = clock();
22     kk();
23     stop = clock();
24     t = ((double)(stop - start)) / CLK_TCK;
25     cout << t << endl;
26     return 0;
27 }