判断回文数字

#include<cstdio>long int reverse(long int n){    long int r=0;    while(n>0)    {        r=r*10+n%10;        n=n/10;    }    return r;}int isCircle(long int a){    if(a==reverse(a))        return 1;    else        return 0;}int main(){    long int n;    while(scanf("%d",&n)!=EOF)    {        if(isCircle(n))            printf("Yes!\n");        else            printf("No!\n");    }    return 0;   }