UVA 10976(p183)----Fractions Again?!

#include<cstdio>#include<iostream>typedef struct{int x,y;}point;point ans[10000];int top,n;void output(){    printf("%d\n",top);    for(int i=1;i<=top;i++)     printf("1/%d = 1/%d + 1/%d\n",n,ans[i].x,ans[i].y);}int main(){    //freopen("out.out","w",stdout);    while(scanf("%d",&n)==1&&n)    {        top=0;        for(int i=n+1;i<=2*n;i++)         if(i!=n)          {              int x=(n*i)/(i-n);              if((double)(x*(i-n)==(i*n)))              {                 top++;                 ans[top].x=x;                 ans[top].y=i;              }          }        output();    }    return 0;}