C program to calculate Simple Interest

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C program to calculate Simple Interest

Write a C program to input principle, time and rate (P, T, R) from user and find Simple Interest. How to calculate simple interest in C programming. Logic to find simple interest in C program.

Required knowledge

Operators, Data Types in c, Variables in C, Basic input/output

Simple Interest formula

Simple interest formula is given by.

Where,

P is the principle amount

T is the time and

R is the rate

Logic to calculate simple interest

Step by step descriptive logic to calculate simple interest.

• 1.Input principle amount in some variable say principle.

• 2.Input time in some variable say time.

• 3.Input rate in some variable say rate.

• 4.Find simple interest using formula SI = (principle * time * rate) / 100.

• 5.Finally, print the resultant value of SI.

Program to calculate simple interest

 
/**
 * C program to calculate simple interest
 */

#include <stdio.h>

int main()
{
    float principle, time, rate, SI;

    /* Input principle, rate and time */
    printf("Enter principle (amount): ");
    scanf("%f", &principle);

    printf("Enter time: ");
    scanf("%f", &time);

    printf("Enter rate: ");
    scanf("%f", &rate);

    /* Calculate simple interest */
    SI = (principle * time * rate) / 100;

    /* Print the resultant value of SI */
    printf("Simple Interest = %f", SI);

    return 0;
}

Output:

Enter principle (amount): 1200
Enter time: 2
Enter rate: 5.4
Simple Interest = 129.600006

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