can anyone tell me the difference between ‘memset’ and ‘fill’ in c++?
I quite confused why my code doesn’t work with ‘memset’ but does with ‘fill’
I haven’t had this problem, so I don’t know why this is happening
can anyone help me?
thank you! :))

I’m making a Sieve of Eratosthenes like usual but it keep giving me this number ‘72340172838076673’
I was expecting a series of 1s and 0s for my sieve
but it kept returning ‘72340172838076673’
here’s my code :

using namespace std;
long long s[2000009],a[1000009],i,j,n;
void seive(int N) {
    j = 1;
    memset(s,1,sizeof(s));
    s[0] = 0;
    s[1] = 0;
    for(int i = 2; i <= sqrt(N); i++) {
        if(s[i] == 1)
            for(int j = i * i; j <= N; j += i) {
                s[j] = 0;
            }
    }
}

int main () {
    ios_base::sync_with_stdio(false); cin.tie(NULL);
    cin>>n;
    seive(2e6);
    for (i = 1 ; i <= n ; i++) {
       cin>>a[i];
       cout<<s[a[i]]<<'n';
    }
}````