## Write a program in C to calculate the simple interest

Write a program in C language to calculate the simple interest. In this article, we will write a program in c language to calculate the simple interest.

## What is simple interest?

Simple interest is a method to calculate the amount of interest charged on a sum at a given rate and for a given period of time. and Simple interest is a quick and easy method to calculate interest on the money.

### Some useful terms in the program

• SI = simple interest
• Formula to calculate SI : (P * R * t)/100
• where,
• P = principle ,
• R = Rate of Interest in % per annum,
• T = the number of years.

### Algorithm to calculate the simple interest

• Start
• Declare the variables.
• Initialize the Variables.
• Calculate the Simple Interest using ((P*R*T)/100).
• Print the Simple Interest.
• End.

## Program in C to calculate the simple interest

```#include<stdio.h>
int main(){
float rate=5, principle=100, time=2
float si;
si=(rate*principle*time)/100;
printf("simple interest is %f",si);
return 0;
}
```

### Explanation of source code

Step 1: start.

Step 2: Include header files using #include.

Step 3: then create a main function method with the int return type.

Step 4: then declare the variable in float and give the respected value to it.

Step 5: and then create the formula of simple interest ((P*R*T*)/10).

Step 6: After then print with the help of the “printf()” statement.

Step 7: After successful completion return 0.

Step 8: end.

### Output In this way, we create a program in C language to calculate the simple interest.