//精度有点低啊。。
#include <stdio.h>
#include <time.h>
const int r=1000;
const int lim=100000000;
int main()
{
int cnt=0;
srand(time(0));
int i;
for (i=1;i<=lim;++i) {
long long x=rand()%r+1;
long long y=rand()%r+1;
if (x*x+y*y<=r*r) ++cnt;
}
printf("pi=%f",cnt*4.0/lim);
return 0;
}
5
17
2015
17
2015
暴力求pi
评论 (0)
