Compound Interest

Medium Operators & Expressions
Solve in Playground →

Problem Statement

Write a C program to compute Compound Interest. Given Principal P, Rate R, and Time T, formula is CI = P * (pow((1 + R / 100), T) – P). Include math.h.

Input Format

Three space-separated values: Principal (double), Rate (double), and Time (double).

Output Format

Print the calculated Compound Interest rounded to 2 decimal places.

Constraints

0.0 < P, R, T <= 10000.0

Sample Input

1000 5 2

Sample Output

102.50

Explanation

CI = 1000 * (1 + 5/100)^2 - 1000 = 1102.5 - 1000 = 102.50.

Starter Code

#include <stdio.h>
#include <math.h>

int main() {
    double p, r, t;
    if (scanf("%lf %lf %lf", &p, &r, &t) == 3) {
        // Write your code here
    }
    return 0;
}

Limits

  • Time Limit: 1s
  • Memory Limit: 256MB

Embedded C Programming

Updated: March 15, 2026
Intermediate

Embedded systems rely on efficient low-level programming to interact directly with hardware. In this course, you will learn how to write practical Embedded C programs used in real microcontroller-based systems. Rather than focusing only on theory, this course follows a practice-driven approach. Each lesson includes hands-on coding exercises that simulate real firmware development tasks used