Calculate Simple Interest using C

#include<stdio.h>
main()
{
float amount,rate,time,si;
printf("nEnter Principal Amount : ");
scanf("%f",&amount);
printf("\nEnter Rate of interest : ");
scanf("%f",&rate);
printf("\nEnter Period of Time   : ");
scanf("%f",&time);
si = (amount * rate * time)/100;
printf("\nSimple Intrest : %f\n",si);
}