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Old 04-02-2004, 11:52 PM   #1
caesius_01
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GCC:- 'cout' is an undeclared function when #include <iostream> is included?


I'm getting the GCC compiler to work and have just scribbled this code for a test:

#include <iostream>

int main() {
int a;
a = 5;
cout << a;

return 0;
}

But low and behold I recieve the message: "In function 'int main()': 'cout' undeclared (fisrt use this fuction) (Each undeclared......" and so forth.

Why is cout and cin not recognised when "#include <iostream> is present. Maybe I'm doing something wrong...probably am. Help appreciated.
 
Old 04-03-2004, 12:28 AM   #2
320mb
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Code:
#include <iostream>

int main() {
int a;
a = 5;
std::cout << a; 

return 0;
}

Last edited by 320mb; 04-03-2004 at 12:29 AM.
 
Old 04-03-2004, 05:49 AM   #3
Komakino
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or:
Code:
#include <iostream>

using namespace std;

int main() {
   int a;
   a = 5;
   cout << a; 

   return 0;
}
 
Old 04-04-2004, 10:09 AM   #4
BooKA.
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Quote:
#include <iostream>

using namespace std;

int main() {
int a;
a = 5;
cout << a;

return 0;
}
#include <iostream>

using std::cout;
using std::cin;
using std::endl;

Defining these at the top give you access to just typing:

cout << "Whatever";

etc.

 
Old 04-04-2004, 10:26 AM   #5
Mega Man X
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Or:

#include<iostream.h>

 
Old 04-04-2004, 11:00 AM   #6
kev82
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Location: Lancaster, England
Distribution: Debian Etch, OS X 10.4
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although for the majority of c++ headers the only difference between the <name> and <name.h> versions is the use of the std namespace there are some significant differences between iostream and iostream.h, you should not use iostream.h
 
  


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