Correct the code below making absolutely no changes to main

Correct the code below making absolutely no changes to main(). Instead, alter 1) prototype for calcDiscount(), definition of function calcDiscount(), and add your name into signature function. In other words, if 100.0 is entered the amount owed output should be 90.00

1488700740 03/04/2017 11:59pm

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Solution

Hi

I have modified the code and highlighted the code changes below

#include <iostream>
#include <iomanip>
using namespace std;
#define DISC_RATE 0.1

//Function prototypes
void signature(void);
double calcDiscount(double &);

int main()
{
// Declare variaables
double amtOwing, discount;

//Input amouont owed
cout << \"Enter amount owed: \" ;
cin >> amtOwing;

//Calculate discount and update amount owing
discount = calcDiscount(amtOwing);

//Output discount and undated amount owed
cout << setprecision(2) << fixed;
cout << \"Amount of Discount: \" << discount << endl;
cout << \"Amount Owed: \" << amtOwing << endl;

signature();
return 0;
}
///////////////////////////////////////////////////////////////
double calcDiscount(double &owe)
{
/*Pre: owe - amount owed
Post: Amount of discount
Purpose: calculate discount and update amount owed to reflect discount*/

double disc;
disc = DISC_RATE * owe;
//Update amount owed
owe = owe - disc;

return disc;
}//////////////////////////////////////////////////////////
void signature()
{
cout << \"Programmed by: \" << \" \";
}

Output:

sh-4.2$ g++ -o main *.cpp                                                                                                                                                                                                                              

sh-4.2$ main                                                                                                                                                                                                                                                           

Enter amount owed: 100                                                                                                                                                                                                                                                 

Amount of Discount: 10.00                                                                                                                                                                                                                                              

Amount Owed: 90.00