觉得思路很新颖，就搬上来了。
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
main()
{
    double x,y;
    srand(time(0));
    int n,count=0;
    printf("请输入总数:");
    scanf("%d",&n);
    for(int i=0;i<n;i++)
    {
        x=(double)rand()/RAND_MAX;
        y=(double)rand()/RAND_MAX;
        if(x*x+y*y<=1)
        {
            count++;
        }
    }
    printf("PI的数值是:%lf",4.0*count/n);
}

[此贴子已经被作者于2018-9-23 14:53编辑过]