How to work with header files in codeblocks

[ankitbehera2670]

I have three file:

main.cpp:

Code: [Select]

#include <iostream>
#include "head.h"
using namespace std;

int main()
{
    int a,b;
    a=2;b=3;
    int c=sum(a,b);
    cout <<"c:"<<c<<endl;
    return 0;
}
head.h:

Code: [Select]

#ifndef _HEAD_H_
#define _HEAD_H_
int sum(int a , int b);
#endif
head.c:

Code: [Select]

#include "head.h"

int sum(int a, int b)
{
    return(a+b);
}
When I compile it, codeblocks give me the error: undefined error to function sum. And I have also included the path in Setting->Build Options->Search Directories->Compiler->Add. But still I get the error.

[BlueHazzard]

http://wiki.codeblocks.org/index.php?title=FAQ-Compiling_(general)#Q:_How_do_I_report_a_compilation_problem_on_the_forums.3F

but probably you are not using projects?

[ankitbehera2670]

No. I am using projects. But I did choose "Empty  Project".

[oBFusCATed]

Then add all your files to the project. This will resolve the problem.

[ankitbehera2670]

I have already done that but still doesn't seem to work. Here is screenshot:https://ibb.co/cKX5xc

[BlueHazzard]

how about you read my link and do what is written there? without this information this is wild guessing....

[ankitbehera2670]

My problem is solved. It looks like the problem was related to the installation of code blocks but I was able to get the desired result after uninstalling and reinstalling codeBlocks. However the following are the details:
 
I am running codeBlocks 16.01 on ubuntu 16.04.9. The compiler I use is g++ version 5.4.0.
I have 3 files that I want to compile: main.cpp head.h head.cpp.
I had created a new empty project in codeblocks and then I had created these 3 files within codeblocks. I have also set the path in Setting->Build Options->Search Directories->Compiler->Add. However when I click the Build and Run button, codeblocks gives me the error that "Undefined reference to function 'sum(int, int)' ".

[BlueHazzard]

nice that it works... But for the next time: In the link is clearly described that we need a full rebuild log. Without this log it is impossible to help. Can  people not read and follow instructions nowadays?

[stahta01]

nice that it works... But for the next time: In the link is clearly described that we need a full rebuild log. Without this log it is impossible to help. Can  people not read and follow instructions nowadays?

I am actually wondering if they can follow links, sometimes.

Tim S.