Odd sum

Description:

Write a program to print the sum of first n odd numbers Test Case 1 Input (stdin) 5 Expected Output 25 Test Case 2 Input (stdin) 7 Expected Output 49

Program :

#include <iostream>
using namespace std;
int main()
{
  int a,b;
  cin>>a;
  b=a*a;
  cout<<b;
 return 0;
}