C++ Program .Write a program to display simple intress.

#include<stdio.h>
#include<conio.h>
void main()
{
float p,n,r,si;
clrscr();
printf("\n enter the value of p");
scanf("\n %f",&p);
printf("\n enter the value of n");
scanf("\n %f",&n);
printf("\n enter the value of r");
scanf("\n %f",&r);
si=(p*n*r)/100;
printf("\n %f",si);
getch();
}