Question

sa se calculeze ultima cifra a produsului 1*2*3*..*n, unde n se citeste de la tastatura. problema de programare.

Answer 1

#include <iostream>
using namespace std;
int main ()
{ int n;
  int i;
  int p;
cin >> n;
for ( i = 1; i <= n; i++) p = p * i;
cout << p%10;
return 0;
}

Answer 2

# include<iostream>
using namespace std;
int main()
{
    unsigned n,p=1,i;
    cin>>n;
    for(i=1;i<=n;i++)
        p=p*i;
    cout<<p%10;
    return 0;
}