Question

If P dollars (aka principal) is invested at 1% interest compounded annually, then the future value of the investment after n years is given by the formula Future value = P(1 + r/100)" Demonstrate your ability to use C++ syntax to design and develop a program to accept the principal, interest rate and years and displayed the computed future value with 2 decimal places. Use the pow function for this computation. The loop is controlled via the sentinel value. ‘E. Include in your answer the Two include files that provides the requirements to display with 2 decimal places and the pow function poefion for this eoprovides the (15 marks)

Answer 1

Dear Student,

below i written the C++ code as per the requirement.

Please note the below program has been tested on ubuntu 16.04 system and compiled using g++ compiler. This code will also work on code blocks.

-----------------------------------------------------------------------------------------------------------------------------------

Program:

------------------------------------------------------------------------------------------------------------------------------------

//header files

#include<iostream>

#include<iomanip>

#include<cmath>

//namespace

using namespace std;

//start of main function

int main()

{

//setting precision to two decimal point

cout<<fixed<<setprecision(2)<<endl;

double FV, P, r;

char sentinel;

int N;

//satrt of do while loop

do
{

cout<<"Enter the principal amount: ";

cin>>P;

cout<<"Enter the interest rate: ";

cin>>r;

cout<<"Enter the yaers: ";

cin>>N;

//formual to calculate future value

FV = P * pow((1 + r/100), N);

cout<<"The future value is: "<<FV<<endl;

cin>>sentinel;

//if sentinel value is E

if(sentinel == 'E')

{

break;

}

}while(sentinel != 'E');

return 0;

}
//end of the main function

================================================================

Output:

nirmalsharma@ubuntu /HomeworkLib solutions/21_02_ 2017$ g++ future value.cpp nirmalsharma@ubuntu HomeworkLib_solutions/21_02_20175 l Enter the principal amount: 1000 Enter the interest rate: 5.5 Enter the yaers: 10 The future value is: 1708.14 Enter the principal amount: 5500 Enter the interest rate: 8.25 Enter the yaers: 5 The future value is: 8175.27 nirmalsharma@ubuntu HomeworkLib_solutions/21_02_20175

==================================================================

Kindly Check and Verify Thanks..!!!