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In this tutorial, we are going to learn the writing program in c to calculate the Simple Interest. Simple Interest is a mathematical term and we have a mathematical formula for this calculation.
Before starting writing the program let’s understand simple interests.
What is Simple Interest?
Simple interest is a method to calculate the interest charged on a loan. It is calculated by multiplying the interest rate by the principal by the number of days that elapse between payments.
Simple Interest Formula:
SI = (P*T*R)/100
Where,
P is principle amount
T is the time duration
R is the rate of interest
Example of how we can calculate simple interest
Input
Enter principle: 1200
Enter time: 2
Enter rate: 5.4
Output
Simple Interest = 129.600006
Logic we are following to calculate simple interest
- We are taking Principle amount, time and rate of interest as an input.
- Now after taking input we are simply calculating simple interest using formula
SI = (principle * time * rate) / 100. - After calculating SI using above formula we are printing the value which is our program output.
Program in C to calculate Simple Interest
#include <stdio.h>
int main()
{
float p, t, r, SI;
printf("Program to calculate Simple Interest\n");
printf("Enter principle amount: ");
scanf("%f", &p);
printf("Enter time (in years): ");
scanf("%f", &t);
printf("Enter rate: ");
scanf("%f", &r);
SI = (p * t * r) / 100;
printf("Simple Interest = %.2f", SI);
return 0;
}Output
Program to calculate Simple Interest
Enter principle amount: 1000
Enter time (in years): 3
Enter rate: 5
Simple Interest = 150.00