Write a C Program to Find Simple Interest.

In this article, we will calculate the simple interest without using structures and functions. Simple interest can be calculated using the formula.

        Simple Interest (SI) = (Principal * Rate * Time) / 100

Where:

Principal: The initial amount of money.

Rate: The rate of interest per annum.

Time: The time period in years.

Here's a C program to Find Simple Interest:

#include<stdio.h>

#include<conio.h>

void main()

{

    // Declare variables to store principal, rate, and time

    float principal, rate, time;

    

    // Read input from the user

    printf("Enter the principal amount: ");

    scanf("%f", &principal);

    

    printf("Enter the rate of interest (in percentage): ");

    scanf("%f", &rate);

    

    printf("Enter the time period (in years): ");

    scanf("%f", &time);

    

    // Calculate simple interest

    float simpleInterest = (principal * rate * time) / 100;

    

    // Display the result

    printf("Simple Interest: %.2f\n", simpleInterest);

}

• We first declare three variables principal, rate, and time to store the input values. 
• We then use printf and scanf functions to get these values from the user. 
• After obtaining the values, we calculate the simple interest using the formula and store it in the variable simpleInterest. 
• Finally, we display the result using printf with %.2f to print the result up to two decimal places.

Output: