[Question] Include Files Inheritance

[superblacksmith]

I tried to find through the forum and online. Also I have read through the header files section of cprogramming.com but could not find the answer. I hope someone here could shed some light to me.

myheader.h

void myFunction(int x);

myheader.cpp

#include "myheader.h"
void myFunction(int x)
{
    [do something here]
}

myheader2.h

#include "myheader.h"

void myFunction2(int x);

myheader2.cpp

#include "myheader.h"
#include "myheader2.h"

void myFunction2(int x)
{
    myFunction(12);
    [do something here]
}

main.cpp

#include "myheader2.h"

myFunction(12);
myFunction2(12);

I have 2 questions, they are in red.

1. Where to include the header file of "myheader.h". Is it in "myheader2.h" or "myheader2.cpp" or both?

2. When I include "myheader2.h" in "main.cpp", will it automatically 'inherit' the "myheader.h"?

Thanks in advance.

[laserlight]

1. Ask yourself: do I use what was declared in this header in this file? It seems that you call myFunction from myheader2.cpp, so you should include myheader.h there rather than in myheader2.h

2. Yes if you include myheader.h in myheader2.h (it isn't "inherited" but included), which is why you should have inclusion guards to prevent problems where the same header could be included more than once, indirectly.

[superblacksmith]

1. Ask yourself: do I use what was declared in this header in this file? It seems that you call myFunction from myheader2.cpp, so you should include myheader.h there rather than in myheader2.h

2. Yes if you include myheader.h in myheader2.h (it isn't "inherited" but included), which is why you should have inclusion guards to prevent problems where the same header could be included more than once, indirectly.

1. Thanks. Understood.

2. Thanks. Will check on include guards.