Compound Interest in C++

 Machine Problem in C++

Write a C++ program to input principal amount, time and rate  (P, T, R) from user and find compound interest of a loan.

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Program Listing

/* compound_interest.cpp

Machine Problem in C++

Write a C++ program to input principal amount, time and rate 

(P, T, R) from user and find compound interest of a loan.

Mr. Jake Rodriguez Pomperada, MAED-IT, MIT

www.jakerpomperada.com

www.jakerpomperada.blogspot.com

jakerpomperada@gmail.com

Bacolod City, Negros Occidental Philippines

*/

#include <iostream>

#include <iomanip>

#include <stdlib.h>

#include <cmath>

int main()

{

    double principal_amount=0.00, time=0.00, rate=0.00,amount=0.00;

    double compound_interest=0.00;

    

    std::cout <<"\n\n";

    std::cout <<"\tCompound Interest in C++";

    std::cout <<"\n\n";

    std::cout <<"\tGive Principal Amount     : ";

    std::cin >> principal_amount;

    

    std::cout <<"\n";

    std::cout <<"\tGive Time Duration        : ";

    std::cin >>time;

    std::cout <<"\n";

    std::cout <<"\tGive Annual Interest Rate : ";

    std::cin >>rate;

    // Calculate compound  interest 

     amount=principal_amount*pow((1 +rate/100),time);

 

     compound_interest=amount-principal_amount;

    std::cout <<"\n";

    std::cout << std::setprecision(2); 

    std::cout << std::fixed;

    std::cout <<"\tThe Compound Interest is $ "

     <<compound_interest;

    std::cout <<"\n\n";

    system("pause");

    

}