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While Loop inside a While Loop

sog (4)
Hi everyone,

I've been reading these boards a lot for help while I've been taking an intro to C++ course. But I was hoping I could ask for some help.

I'm creating an Interest Compounding Calculator, and I'm trying to have it execute a while loop inside a while loop.

So far it will give you the interest and the yield from the highest possible interest rate (which the user inputs) and 1. I want it also to repeat this for every year leading upto the number of years the user wants it to run. so eg: if the user wants it to run for 5 years and an interest rate of 5.

I want it to have an output for year 5, and the yields for percents 5, 4, 3, 2, 1
Year 4 and the yields for percents 5, 4, 3, 2, 1
and etc.

I've set up the two while loops but only one of them runs.

Heres my code, thanks for your help!

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#include <iostream>
#include <cmath>
#include <iomanip>

using namespace std;

void welcome()
     {
     	cout << " Hello and Welcome to the Compounding Calculator\n"
	   		    " -----------------------------------------------\n"
		     	" Here you can calculate how much your investment will yield\n"
				" in various scenarios.\n"
				" Lets Get Started!" << endl;
		cout << "-------------------------------------------------\n";
		cout << " ***Please enter all values numerically***\n" << endl;
     }

void interestCalculation(double& totalValue, double& investmentInt, double& interest, double& length)
     {
    	
     while (interest>0)
		   {			
	        
            totalValue = ((investmentInt*(interest/100))+investmentInt)*length;
            cout << interest << "% = $" << totalValue << "   ";															
		    --interest;
           }
     cout << endl;   
     
     }

void investEval(double& investInt)
{
    		cout << " Please enter the amount of your initial investment: $";
			cin  >> investInt;
}

void interestEval(double& interestRate)
{
			cout << " Please enter the highest amount of interest you approximate you will get: ";
			cin  >> interestRate;
}

void lengthEval(double& length)
{
			cout << " For how many years do you want to calculate? " ;
			cin  >> length;
}
								

int investmentProgram()
{
	double s;
welcome();

while(true)
{
           char choice;
           double investment, interestR, n, value;
           
           investEval(investment);
           interestEval(interestR);
           lengthEval(n);
                  
           for (int x=n; x>0; --x)
           {
           interestCalculation(value, investment, interestR, n);
           cout << value;
           --n;
           }
        
           	
            
	cout << " Would you like to make another calculation?" << endl;
			cout << " Enter 'y' for yes and 'n' for no: ";
			cin >> choice;
			if (choice == 'y')
			{
				continue;
			}
			else 
			{
				break;
				cout << endl;
			}
		

}
}

int main()
{
	investmentProgram();
	
	system("pause");	
	
	return 0;	
}
Last edited on
SamuelAdams (1535)
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