/* Program to calculate the compound interest and amount using fn subprogram */
/* Problem 27 */

#include <stdio.h>
#include <conio.h>
#include <math.h>

float CmpdInt(float pr, float ra, float ti)
{
float cmpd_int;
cmpd_int = (pr * pow((1 + ra),ti)) - pr;
return cmpd_int;
}

main()
{
float p,r,t;
float ci;
float amount;
clrscr();
printf("Please enter the principal : ");
scanf("%f",&p);
printf("Now enter the rate of interest : ");
scanf("%f",&r);
printf("Also enter the time period (in years) : ");
scanf("%f",&t);
ci = CmpdInt(p,r,t);
amount = ci + p;
printf("\nThe compound interest = Rs. %.2f and amount = Rs. %.2f",ci,amount);
printf("\n\nPress any key to exit...");
getch();
}