Hi guys. I tried implementing sieve today (I have done it 50+ times before), and my code was giving Runtime error :(

I tried to find out the error in my code but I don't know what is wrong.

#include<bits/stdc++.h>
using namespace std;
bool vis[1000002];

int main(){
int i,j;
for(i=2;i<=100000;i++) vis[i]=true;

for(i=2;i<=100000;i++){

    if(!vis[i]) continue;

    for(j=i*i;j<=100000;j+=i){
        vis[j]=false;
    }
    //cerr<<i<<" ";
}

return 0;
}

If I change j+=i to j++, it does not show runtime error!(& the code will obviously be wrong & TLE)