C program to find simple interest

Input

            Enter principle: 1200

            Enter time: 2

            Enter rate: 5.4

Output          

            Simple Interest = 129.600006

Find simple interest using formula

SI = (principle * time * rate) / 100.

#include <stdio.h>
int main()
{
	float principle, time, rate, SI;
	
	printf("Enter principle amount : ");
	scanf("%f", &principle);
	
	printf("Enter time : ");
	scanf("%f", &time);
	
	printf("Enter rate : ");
	scanf("%f", &rate);
	
	SI = (principle * time * rate) / 100;
	printf("Simple Interest = %f", SI);
	
	return 0;
}