Example: Compound Interest Program in C using Function

C
C++
C#
Java
Python
PHP
// Compound Interest Program in C using Function
#include <stdio.h>
#include <math.h>

// This function will return the compound interest
float CalcCompound(float p, float t, float r) {
    // Calculate the compound interest
    return p * (pow((1 + r / 100), t));
}

// It's the driver function
int main() {
    float p, t, r, CI;    
    // p - To store the principle amount
    // t - To store the time amount
    // r - To store the rate amount

    printf("Enter the principal (Amount), Time, and Rate::\n");
    scanf("%f%f%f", &p, &t, &r);

    // It will return the final Output
    printf("\nCompound Interest = %f\n", CalcCompound(p, t, r));
    return 0;
}