Hi Guys, my name is Richard and im new to the forum. I was wondering if someone could help me. I am starting to teach myself c++, using c++ for dummies. I am having problems compiling a code with headers. I have taken the code straight from the book and it still won't compile.
 
This is the code:
 
main.cpp
 
#include <cstdlib>
#include <iostream>
#include <stdlib.h>
#include <string>
#include "safestuff.h"
 
using namespace std;
 
int main(int argc, char *argv[])
{
cout << "Surprise, surprise!" << endl;
cout << "The combination is (once again)" << endl;
cout << SafeCracker(12) << endl;
system("PAUSE"); 
return 0;
}
 
safestuff.cpp
 
#include <string>
 
using namespace std;
 
string SafeCracker(int SafeID) {
return "13-26-16";
}
 
safestuff.h
 
string SafeCracker(int SafeID);
 
has anyboy got any idea what i am doing wrong. any help would be appreciated.

Thank you.

Rich

Hi Richard,

Welcom to developerfusion!

=> About your code :

- You don't need to include 'stdlib.h', just enough to include 'cstdlib', since it's the newer version of 'stdlib.h'. But it's not a problem.

- The problem is : you should include 'string' in 'safestuff.h', then add the following lines at the first of 'safestuff.h' :

#include <string>

using namespace std;

Please note that, you should include all of required header files in each separate file of your project.

On detail toward the solution is that #include "safestuff.h"  should be added to safestuff.cpp file. 

safestuff.cpp
 
#include <string> 
#include "safestuff.h"
using namespace std;
 
string SafeCracker(int SafeID) {
return "13-26-16";
}

Good point legendario3,

But in this case, it's not required to include 'safestuff.h' in 'safestuff.cpp', since there is nothing in header file that is not defined in source file.