Building Lot Are with functions

[nichan79]

Like this?

cout << "Please enter the width in feet (ie: 100): ";
cin >> width;
cout << "Thank you, please enter the length in feet (ie: 200): ";
cin >> length;

[AbstractionAnon]

That's the idea. You have getLength() and getWidth() as separate functions so lines 1-2 would go in getWidth() and lines 3-4 would go in getLength().

[nichan79]

so it's actually more like this then:

#include <iostream> 
#include <iomanip>
using namespace std; 

// Function prototypes. 
double getLength(); 
double getWidth(); 
double getArea(double length, double width); 
void displayData(double length, double width, double area); 

double getArea(double length, double width) 
{ 
double area = length * width; 
return area; 
}

int main() 
{ 
double length, // The rectangle's length 
width, // The rectangle's width 
area; // The rectangle's area 

// Get the rectangle's length. 
length = getLength(); 
cout << "Thank you, please enter the length in feet (ie: 200): ";
cin >> length;

// Get the rectangle's width. 
width = getWidth(); 
cout << "Please enter the width in feet (ie: 100): ";
cin >> width;

// Get the rectangle's area. 
area = getArea(length, width); 

// Display the rectangle's data. 
displayData(length, width, area); 

return 0; 
} 

But I'm still getting this:

C:\Users\nichan79\AppData\Local\Temp\ccRNA1wf.o chapter 6 program.cpp:(.text+0x47): undefined reference to `getLength()'
C:\Users\nichan79\AppData\Local\Temp\ccRNA1wf.o chapter 6 program.cpp:(.text+0x7f): undefined reference to `getWidth()'
C:\Users\nichan79\AppData\Local\Temp\ccRNA1wf.o chapter 6 program.cpp:(.text+0x10a): undefined reference to `displayData(double, double, double)'
c:\program files (x86)\dev-cpp\mingw64\x86_64-w64-mingw32\bin\ld.exe C:\Users\nichan79\AppData\Local\Temp\ccRNA1wf.o: bad reloc address 0x18 in section `.xdata'
C:\Users\nichan79\Desktop\collect2.exe [Error] ld returned 1 exit status

[AbstractionAnon]

No, getLength() and getWidth() are separate functions.

// Delete lines 25-26 and 30-31
// After line 40:

double get_length()
{  double len;
    cout << "Please enter the length in feet (ie: 200): ";
    cin >> len;
    return len;
}

double get_width ()
{  double wid;
    cout << "Please enter the width in feet (ie: 100): ";
   cin >> wid;
    return wid;
}

Line 37: You have no implementation for displayData().

[nichan79]

I got it now here's how I fixed the same thing. Thank all of you for helping!

double getLength()
{
cout << "Enter length in feet: ";
double length;
cin >> length;

return length;
}
double getArea( double length, double width )
{
// Converts square feet to acres
return ((length * width)/43560);  
}

//Display output
void displayData(double length, double width, double area)
{
cout<<"A building lot of "<<width<<" feet by "<<length<<" feet has "<<area<<" acres."<<endl;
}

[mockman23]

Can you show the full completed code please?