This is for my college freinds: Program to find Palindromic Prime

PalindromicPrime.c

int main() {
    int x,y,n,z,rem,prime=0,pal=0,sum;
    scanf("%d",&x);
    scanf("%d",&y);
    for(int i=x;i<=y;i++){
        prime=0;
        for(int j=2; j<i; j++){
        if(i%j==0){
            prime=1;
            break;
        }
    }
    if(prime==0){
        n=i;
        pal=0;
        while(n!=0){
         rem=n%10;
         pal=pal*10+rem;
         n=n/10;   
         
        }
            if(pal==i){
                sum=sum+i;
            }
       }
        

  }
         printf("%d",sum);  

    
    return 0;
}