C++ Program to calculate simple interest.
#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
float a,b,c,d,e;
cout<<"Enter principal: ";
cin>>a;
cout<<"Enter rate% : ";
cin>>b;
cout<<"Enter time in years: ";
cin>>c;
a=a*b*c/100;
cout<<"The simple interest is: "<<a;
getch();
}