Question

Se da numarul natural n. Sa se determine ultima cifra a sumei 2 la puterea n+ 3 la puterea n+...+9 la puterea n

Answer 1

#include <iostream>
using namespace std;
int main()
{
  int c=1,power=1,n,m=1,sum=0;
  cin>>n;
  while(c<=n)
  {
      power*=m;
      c++;
  }
  sum=sum+power;
  power=2;
  c=1;
  while(c<=n)
  {
      power*=m;
      c++;
  }
   while(c<=n)
  {
      power*=m;
      c++;
  }
  sum=sum+power;
  power=3;
  c=1;
  while(c<=n)
  {
      power*=m;
      c++;
  }
  sum=sum+power;
  power=4;
  c=1;
  while(c<=n)
  {
      power*=m;
      c++;
  }
  sum=sum+power;
  power=5;
  c=1;
  while(c<=n)
  {
      power*=m;
      c++;
  }
  sum=sum+power;
  power=6;
  c=1;
  while(c<=n)
  {
      power*=m;
      c++;
  }
  sum=sum+power;
  power=7;
  c=1;
    while(c<=n)
  {
      power*=m;
      c++;
  }
  sum=sum+power;
  power=8;
  c=1;
  while(c<=n)
  {
      power*=m;
      c++;
  }
  sum=sum+power;
  power=9;
  c=1;
   while(c<=n)
  {
      power*=m;
      c++;
  }
  cout<<sum%10;
}