Write a C Program to Find Compound Interest.
In this article, we will calculate the compound interest. Compound interest can be calculated using the formula.
Compound Interest = Principal * (1 + (Rate / 100))^Time - Principal
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 Compound Interest:
#include<stdio.h>
#include<conio.h>
void main()
{
// Declare and initialize variables
float principal, rate, time, compoundInterest;
// Get input from the user
printf("Enter the principal amount: ");
scanf("%f", &principal);
printf("Enter the rate of interest (per annum): ");
scanf("%f", &rate);
printf("Enter the time (in years): ");
scanf("%f", &time);
// Calculate compound interest
compoundInterest = principal * (pow(1 + (rate / 100), time)) - principal;
// Display the result
printf("Principal Amount: $%.2f\n", principal);
printf("Rate of Interest: %.2f%%\n", rate);
printf("Time (in years): %.2f\n", time);
printf("Compound Interest: ₹%.2f\n", compoundInterest);
}
- 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 compound interest using the formula and store it in the variable compoundInterest.
- Finally, we display the result using printf with %.2f to print the result up to two decimal places.
Output:
