Compiling multiple files in DevC++

Micah_Da_Giant · #1 06-Sep-2008, 15:32

I having problems compiling a header and and a .cpp file in a project.
I get message: "The system cannot find the file specified

Main.cpp

CPP / C++ / C Code:

#include <string>
enum color {blue, red, black, clear};
enum PenStyle {ballpoint, felt_tip, fountain_pen};
Class Pen {
public:
    Color InkColor;
    Color ShellColor;
    Color CapColor;
    PenStyle Style;
    float Length;
    string Brand;
    int InklevelPercent;
    void write_on_paper(string words) {
         if (InklevelPercent <= 0) {
             cout <<"Oops! Out of INk!"<<endl;
         }
         else {
              cout << words << endl;
              InklevelPercent = InklevelPercent - words.length();
         }
    }
    void break_in_half() {
         InklevelPercent = InklevelPercent/2;
         Length = Length /2.0;
    }
    void run_out_of_ink() {
         InkLevelPercent = 0;
    }
};

Pen.h

CPP / C++ / C Code:

Class Pen {
public:
    Color InkColor;
    Color ShellColor;
    Color CapColor;
    PenStyle Style;
    float Length;
    string Brand;
    int InklevelPercent;
    void write_on_paper(string words) {
         if (InklevelPercent <= 0) {
             cout <<"Oops! Out of INk!"<<endl;
         }
         else {
              cout << words << endl;
              InklevelPercent = InklevelPercent - words.length();
         }
    }
    void break_in_half() {
         InklevelPercent = InklevelPercent/2;
         Length = Length /2.0;
    }
    void run_out_of_ink() {
         InkLevelPercent = 0;
    }
};

davekw7x · #2 06-Sep-2008, 15:51

Quote:

Originally Posted by Micah_Da_Giant

I having problems compiling a header and and a .cpp
Main.cpp

1. You didn't post anything with a main() function. It looks like you pasted Pen.h twice. Did your real main.cpp file have #include "Pen.h" or what? Is Pen.h in the same directory as your main program file?

2. In C++, it's spelled class, not Class

3. You also have a capitalization inconsistency in one use of InklevelPercent.

Regards,

Dave

Micah_Da_Giant · #3 06-Sep-2008, 16:00

Thank you Very much

Micah_Da_Giant · #4 06-Sep-2008, 16:21

Pen.h

CPP / C++ / C Code:

#include <string>
enum color {blue, red, black, clear};
enum PenStyle {ballpoint, felt_tip, fountain_pen};
class Pen {
public:
    Color InkColor;
    Color ShellColor;
    Color CapColor;
    PenStyle Style;
    float Length;
    string Brand;
    int InkLevelPercent;
    void write_on_paper(string words) {
         if (InkLevelPercent <= 0) {
             cout <<"Oops! Out of INk!"<<endl;
         }
         else {
              cout << words << endl;
              InklevelPercent = InkLevelPercent - words.length();
         }
    }
    void break_in_half() {
         InkLevelPercent = InkLevelPercent/2;
         Length = Length /2.0;
    }
    void run_out_of_ink() {
         InkLevelPercent = 0;
    }
};

Main.cpp

CPP / C++ / C Code:

#include <iostream>
#include <stdlib.h>
[color="Red"]#include "Pen.h"[/color]
int main(int argc, char *argv[])
{
    Pen FavoritePen;
    FavoritePen.InkColor = blue;
    FavoritePen.ShellColor = clear;
    FavoritePen.CapColor = black;
    FavoritePen.Style = ballpoint;
    FavoritePen.Length = 6.0;
    FavoritePen.Brand = "Pilot";
    FavoritePen.InklevelPercent = 90;
    Pen WorstPen;
    WorstPen.InkColor = blue;
    WorstPen.ShellColor = red;
    WorstPen.CapColor = black;
    WorstPen.Style = felt_tip;
    WorstPen.Length = 3.5;
    WorstPen.Brand = "Acme Special";
    WorstPen.InkLevelPercent = 100;
    cout <<"This is my favorite pen" <<endl;
    cout <<"Color: "<< FavoritePen.InkColor <<endl;
    cout <<"Brand: "<< FavoritePen.Brand <<endl;
    cout <<"Ink Level: "<< FavoritePen.InkLevelPercent <<"%"<<endl;
    FavoritePen.write_on_paper("Hello I am a pen");
    cout <<"Ink Level: "<< FavoritePen.InkLevelPercent <<"%"<<endl;
    return 0;
}

Yes, I did include the "#include "Pen.h"" in the main.cpp file

davekw7x · #5 06-Sep-2008, 18:24

Quote:

Originally Posted by Micah_Da_Giant

Yes, I did include the "#include "Pen.h"" in the main.cpp file

Is Pen.h in the same directory as main.cpp?

Regards,

Dave

Micah_Da_Giant · #6 07-Sep-2008, 16:12

What do you mean??

davekw7x · #7 07-Sep-2008, 16:18

Quote:

Originally Posted by Micah_Da_Giant

What do you mean??

I mean:

In what directory is your file "main.cpp"?

Is "Pen.h" in that same directory?

How did you create the files?

How did you save them?

Did you create a project in Dev-C++?

Did you add both of those files to the project before attempting to compile?

Regards,

Dave

Micah_Da_Giant · #8 07-Sep-2008, 16:37

Yes, I did create a project in Dev C++. First, I created the project then I created the files for the projects. Yes, I believe that "Pen.h" is in the same directory.

Micah_Da_Giant · #9 07-Sep-2008, 17:00

Now, I'm getting these errrors:

Line 3: In file included from main.cpp
Line 11: 'string' does not name a type
Line 13: variable or field 'write_on_paper' declared void
Line 13: expected ';' before '(' token
Line 14: expected unqualified-id before '{' token
in function 'int main(int, char**)':
Line 15: 'class Pen' has no member named 'Brand'
Line 23: 'class Pen' has no member named 'Brand'
Line 27: 'class Pen' has no member named 'Brand'
Line 29: 'class Pen' has no member named 'write_on_paper'
[Build Error] [main.o] Error 1

Pen.h

CPP / C++ / C Code:

#include <string>
enum Color {blue, red, black, clear};
enum PenStyle {ballpoint, felt_tip, fountain_pen};
class Pen {
public:
    Color InkColor;
    Color ShellColor;
    Color CapColor;
    PenStyle Style;
    float Length;
    string Brand;
    int InkLevelPercent;
    void write_on_paper(string words)
    {
         if (InkLevelPercent <= 0) {
              cout <<"Oops! Out of ink!"<<endl;
         }
         else {
             cout<<words<<endl;
             InkLevelPercent = InkLevelPercent - words.length();
         }
    };
    void break_in_half(){
        InkLevelPercent = InkLevelPercent /2;
        Length = Length / 2.0;
    }
    void run_out_of_ink() {
        InkLevelPercent = 0;
    }
};

main.cpp

CPP / C++ / C Code:

#include <iostream>
#include <stdlib.h>
#include "Pen.h"

using namespace std;

int main(int argc, char *argv[])
{
    Pen FavoritePen;
    FavoritePen.InkColor = blue;
    FavoritePen.ShellColor = clear;
    FavoritePen.CapColor = black;
    FavoritePen.Style = ballpoint;
    FavoritePen.Length = 6.0;
    FavoritePen.Brand = "Pilot";
    FavoritePen.InkLevelPercent = 90;
    Pen WorstPen;
    WorstPen.InkColor = blue;
    WorstPen.ShellColor = red;
    WorstPen.CapColor = black;
    WorstPen.Style = felt_tip;
    WorstPen.Length = 3.5;
    WorstPen.Brand = "Acme Special";
    WorstPen.InkLevelPercent = 100;
    cout <<"This is my favorite" <<endl;
    cout <<"Color: "<<FavoritePen.InkColor <<endl;
    cout <<"Brand: "<<FavoritePen.Brand <<endl;
    cout <<"Ink Level: "<<FavoritePen.InkLevelPercent<<"%"<<endl;
    FavoritePen.write_on_paper("Hello I am a pen");
    cout <<"Ink Level: "<<FavoritePen.InkLevelPercent<<"%"<<endl;
    system("PAUSE");
    return EXIT_SUCCESS;
}

davekw7x · #10 07-Sep-2008, 17:25

Quote:

Originally Posted by Micah_Da_Giant

Now, I'm getting these errrors:

Line 3: In file included from main.cpp
Line 11: 'string' does not name a type

The Good News: It's now finding your header file.

The not-so Good News: There is a little more work to be done.

The Good News: It's really minor, once you get familiar with it:

At the point in your program where you include Pen.h, the compiler doesn't know what a "string" is, even though you have included <string>.

It's a namespace thing.

Here's how I would start Pen.h:

CPP / C++ / C Code:

#include <string>
#include <iostream>

using std::string;
using std::cout;
using std::endl;

.
.
.

In header files, I always give all of the information that they need, so they don't depend on something else having been included in the other file (like <iostream>)

This should clear up lots (most? maybe even all???) of the error messages. Try it again.

Regards,

Dave

Footnote: I would also recommend that you use C++ library headers in main.cpp:

CPP / C++ / C Code:

#include <iostream>
#include <cstdlib>
#include "Pen.h"

using namespace std;

int main(...

I mean, it's not "wrong" to include <stdlib.h>, but the "right way" is with <cstdlib>.

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