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");
    
}


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