Simple Interest using C++ Program.

#include<iostream>
using namespace std;

int main()
{
  float P,R,N,I;

  cout<<"Enter Principle Amount: ";
  cin>>P;

  cout<<"Enter Rate of Interest: ";
  cin>>R;

  cout<<"Enter No. of Years: ";
  cin>>N;

  I=(P*R*N)/100;

  cout<<"Simple interest is : "<< I;

  return 0;
}

Output of Program

Enter Principle Amount: 1000
Enter Rate of Interest: 12
Enter No. of Years: 2
Simple interest is : 240