Program to find Simple Interest and Compound Interest

#include <stdio.h>
#include <math.h>
main()
{
float p, r, t, si, ci;
printf("\nEnter priciple, rate and time: ");
scanf("%f %f %f", &p, &r, &t);
si = (p * r * t) / 100;
ci = p * pow((1 + r/100), t) - p;
printf("\n\nSimple Interest: %.2f", si);
printf("\n\nCompound Interest: %.2f", ci);
getch();
}