#include<stdio.h>
#include<stdlib.h>
int main(){
int i,CircleCount=0;
float x,y;
for(i=1;i<=100000;i++){
x=(double)rand()/(double)0x7fff;
y=(double)rand()/(double)0x7fff;
if(x*x+y*y<=1.0)
CircleCount++;
if(i%10000==0)
printf(“%7d回 n=%f\n”,i,4.0*CircleCount/(float)i);
}
return(0);
}