Errors with creating header files

C++
1

In part 3 of the C++ course in the creating objects video, I’m having trouble with creating the class in visual studio code.

main.cpp:
#include “rectangle.hpp”
#include
using namespace std;

int main() {
rectangle rectangle;
rectangle.width = 10;
rectangle.height = 20;
rectangle.draw();
cout << rectangle.getArea();
return 0;
}

rectangle.cpp:
#include “rectangle.hpp”
#include
using namespace std;

void rectangle::draw() {
cout << “Drawing a rectangle” << endl;
cout << "Dimensions: " << width << ", " << height << endl;
}

int rectangle::getArea() {
return width * height;
}

rectangle.hpp:
#ifndef RECTANGLE_H
#define RECTANGLE_H

class rectangle {
public:
int width;
int height;
void draw();
int getArea();
};

#endif

This is my code and this is the error that comes up when I run it.

C:/msys64/mingw64/bin/…/lib/gcc/x86_64-w64-mingw32/12.2.0/…/…/…/…/x86_64-w64-mingw32/bin/ld.exe: C:\Users-------\AppData\Local\Temp\cck5lW42.o:main.cpp:(.text+0x23): undefined reference to rectangle::draw()' C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/12.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:\Users\--------\AppData\Local\Temp\cck5lW42.o:main.cpp:(.text+0x2f): undefined reference to rectangle::getArea()’
collect2.exe: error: ld returned 1 exit status

What I think is happening is that I am unable to compile all of the files together at once. Does anyone have any fixes?

2

Change your class name from rectangle from Rectangle. When creating object it cannot find the identifier for your type rectangle. It is like declaring int int;

Also,

Change the second line to #include <iostream> if it is not an error while copying.

3

Hello,
I have same problem. Did you solved it? if you did, please can you help me?

4

I have posted the solution. If it is something else then ask a new question or post the new error after trying the solution (if any).