PE 4 Largest palindrome product

#include<iostream>using namespace std;int palin(int n){int m=n;int sum=0;while(m)             //将原数颠倒{sum=sum*10+m%10;m/=10;}if(sum==n)return 1;elsereturn 0;}int main(void){int i,j,m=0;for(i=999;i>=100;i--){for(j=999;j>=100;j--){if(palin(i*j)==1){if(m<i*j)m=i*j;}}}cout<<m;return 0;}