Thread: include file

this is the contenent of <cryptio.h>
when i include it in any main is declare errors !!!
please can you help me

Code:

#include <conio.h>
#include "stdio.h"
#include "string.h"
#include "stdlib.h"
#include "fstream.h"

/************************* codation d'u caractere ****************************************/
char codec(char g)

{

int c;

c=(int)g;
if(c>=254){return(g);}
else
{
c++;
g=(char)c;
return(g);
}

}
/**************************** fin codation d'un caractere ****************************/
/*********************************** decodation d'un caractere **************************/
char decode(char g)

{

int c; 
c=(int)g;
if(c>=254)
{return(g);}
else
{
c--;
g=(int)c;
return(g);
}
}
/********************************* fin decodation d'un caracterer ************************/



/**************************** decryptage d'un fichier ***************************/

void decrypte(fstream &T,char name[]) //pass the file stream to the function 

{  

	
	// the method to read a file , that I ....
	char chy,chn;
	fstream file(name,ios::in|ios::out);
	
	while(!T.eof())
	{
	
	T.get(chy);
	if(chy==NULL){break;}
	chn=decode(chy);
	
	file<<chn;
	
	}

file.close();

}
/********************** decryptage d'un fichier ****************************//********************************* cryptage d'un fichier *****************/
void crypte(fstream &T,char name[])   //pass the file stream to the function 
{ 
	
	// the method to read a file , that I ....
	char chy,chn;
	fstream file(name,ios::in|ios::out);
	
	while(!T.eof())
	{
	T.get(chy);
	chn=codec(chy);
	file<<chn;
	
	}
file.close();

}
/******************************* fin decryptage ********************************/

Paste your error messages as well

Originally Posted by enjoy

this is the contenent of <cryptio.h>
when i include it in any main is declare errors !!!

You're DEFINING (not declaring) functions, and you don't had the proper pre-compiler directives to prevent re-evaluation of the header. It should be like this

Code:

#ifndef _CRYPTIO_H_
#define _CRYPTIO_H_
/***
Header content here
***/
#endif //_CRYPTIO_H_

Also, place the functions DEFINITION in a *.cpp, and in the header place only declarations like

Code:

char codec(char g);
char decode(char g);
void decrypte(fstream &T,char name[]);
void crypte(fstream &T,char name[]);

That and the precompiler directives.