Can anyone enlighten me what causes this OLE ?

I thought my code was harmless, and I am calculating n!%p. At least that's what I am trying to do.


#include<stdio.h>

int main(){

    long long f,g,n,p;
    scanf("%lld %lld",&n,&p);
    while(n+p != 0){
        [code deleted]
        printf("%lld\n",f);
        scanf("%lld %lld",&n,&p);
    }
    return 0;

}

Edited by moderator 04.02.2020 18:32