Question

Va rog mult ajutor!!Elaborati un program care sa calculeze pt primii n termeni:2*4*6*8...2n prin instructiunile:for ,while ,repeat!!

Answer 1

# include<iostream>
using namespace std;
int main()
{
    unsigned n,i,p=1;
    cin>>n;
    for(i=1;i<=2*n;i++)
      if(i%2==0)
         p*=i;
    cout<<p;
    return 0;
}