# C program to calculate simple interest using function

## C program to calculate simple interest using function

**Let’s understand the steps:**

### Formula To find simple interest

**Simple Interest = (p * n * r) / 100**

**where**,

** p** = Principal Amount,

** n** = Number of Years / Period

** r** = Rate of Interest

###### example:-

Principal Amount = ₹ 5000

Period = 2 years

Rate of Interest = 10%

Simple Interest = ₹ 1000

## Logic to calculate simple interest

Step

Input

- principle amount in variable P.
- time in variable t.
- rate in variable r.
- Find simple interest using formula.
`SI = (p*t*r) / 100`

- print output.

## C program to calculate simple interest

#include <stdio.h> int main() { float p, t, r, SI; //Input principle, rate and time printf("Enter principle:- "); scanf("%f", &p); printf("Enter time: "); scanf("%f", &t); printf("Enter rate: "); scanf("%f", &r); // Calculate simple interest SI = (p * t * r) / 100; // Print the resultant value of SI printf("Simple Interest = %f", SI); } Output:

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