C++ Program to find simple interest

Q. WAP to find the simple interest. Take the interest rate as

R = 5% if T>7 yrs,

R = 10% if 7<=T<=12 yrs,

R = 15% if T>12 yrs.

#include <iostream.h>

#include <conio.h>

#include <iomanip.h> //IO manipulation header file

void main()

{

  float P,T,R,I;

  cout<<"Enter principle: ";

  cin>>P;

  cout<<"Enter time (year): ";

  cin>>T;

  if(T<7)

    R=5;

  else if(T>=7 && T<=12)

    R=10;

  else

    R=15;

  I=(P*T*R)/100;

  cout<<endl<<"Simple Interest = "<<I<<setw(5)<<"Ans";

  getch();

}

OUTPUT: