Pass-by-reference

[Kendrakendra]

I need to return taxes paid and net pay by pass referencing a gross pay overloaded function. Are the values returned from calling the overloaded function file stream objects? Can they be passed simply through a pass-by-reference function?


//Read Data from File, gather info and calculate pay, output data to file

while(counter < x)
{
inFile >> last_name >> first_name >> hours_worked >> hourly_pay;
outFile << first_name << " " << last_name << " ";
outFile << calculate_gross_pay(hours_worked,hourly_pay);
counter++;
outFile<<endl;
}
cout<<endl;
inFile.close();
outFile.close();
return 0;
}

// Gross pay calculation
double calculate_gross_pay(int hours_worked, double hourly_pay)
{
if (hours_worked <= 40 and hourly_pay == 0)
return hours_worked * 7.25;
if (hours_worked > 40 and hourly_pay ==0)
return 40*7.25+1.5*(hours_worked - 40)*7.25;
if(hours_worked <=40 and hourly_pay != 0)
return hours_worked*hourly_pay;
else
return 40*hourly_pay+1.5*(hours_worked - 40)*hourly_pay;
}
// Net pay, after taxes
void calulate_net_pay(int&calculate_gross_pay)
... lost lost lost!

[dhayden]

Store the gross pay in a local variable and then pass that to calculate_net_pay:

double gross = calculate_gross_pay(hours_worked, hourly_pay;
double net = calcualte_net_pay(gross);
outFile << first_name << " " << last_name << " ";
outFile << gross << " " << net << endl;

This makes it easy to compute, easy to print, and easy to debug.

[Kendrakendra]

Thank you! I'm having an issue where the program will not recognize 'gross' when I try to pass it through void calculate_net_pay(gross). I'm not sure what I'm doing wrong.

void calculate_net_pay(int&);

....
double net = calcualte_net_pay(gross);

void calculate_net_pay(gross);
{ return gross * .25;
}

[Kendrakendra]

The error message reads 'Unknown type name 'gross' '

[wildblue]

Error might be coming from here - if this is the function definition, you're missing the type to the left of gross in the parenthesis. And you wouldn't need the semicolon after the right parenthesis after gross.

void calculate_net_pay(gross);
{ return gross * .25;
}

[Zhuge]

Additionally, you are trying to return something from a function defined to not return anything.

[Kendrakendra]

AH! I typed in my code incorrectly.
I defined the function as:
double calculate_net_pay(int&)

called gross from stored local variable:
double gross = calculate_gross_pay(hours_worked,hourly_pay);

wrote function as:
double calculate_net_pay(gross)
{ return gross * .25;
}

I appreciate your help!

[wildblue]

In the function definition you need the type.

double calculate_net_pay(??? gross)
{...
}

[Kendrakendra]

Thanks wildblue! This forum has been very welcoming!