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C Program To Find Simple Interest

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Simple interest is a quick method of calculating the interest charge on a loan. In this article, we will learn to calculate the simple interest in C programming language.

Simple interest is determined by multiplying the daily interest rate by the principal by the number of days that elapse between payments. Divide the product of these three values to convert the percentage value of the interest rate into decimals.

Simple Interest Formula

  Simple Interest = \frac{(P x T x R)}{/100}

Where P is the principal amount, T is the time, and, R is the interest rate.

Simple Interest Program in C

C

// C program to implement
// the above approach
#include <stdio.h>
  
// Driver code
int main()
{
    // We can change values here for
    // different inputs
    float P = 1, R = 1, T = 1;
  
    // Calculate simple interest
    float SI = (P * T * R) / 100;
  
    // Print Simple Interest
    printf("Simple Interest = %f\n", SI);
  
    return 0;
}
  
// This code is contributed by agarwalsajal19.

                    

Output
Simple Interest = 0.010000

Complexity Analysis

  • Time Complexity: O(1)
  • Auxiliary Space: O(1)

Last Updated : 21 Feb, 2024
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