header file basic question:

Question

//call.cpp
#include "add.h"
#include<iostream>
using namespace std;
int main() {
cout<<addd(2,3); return 0; }
//add.cpp
#include "add.h"
#include<iostream>
using namespace std;
int addd(int a,int b)
return a+b;
//add.h
#ifndef ADD_H_
#define ADD_H_
using namespace std;
int addd(int a,int b);
#endif // ADD_H_
when i compile cal.cpp it give undefined behaviour of addd() please help where i have done wrong

Answer 1

I think code playground doesnt support header files..U should use cxxdroid app,it supports .h files plus its fully offline,u can practice as much you like,it has over 80 standard libraries ....

Answer 2

see under build target files in project tab, did add.cpp included in there ? if not try to add it.

Answer 3

I am running it on code blocks

Answer 4

its been a long time, i' m sorry if i wrong
but probably your add.cpp was not compiled
make sure you compile all the required files by looking at build logs

Answer 5

actually if I run it in terminal it works fine but in code blocks it is giving errors

Answer 6

thanks u so much it helps