//=================================================================================
#include <stdio.h>
#include <stdlib.h>

int main(){

FILE *in,*out;
char ch;

in = fopen("/home/arash/A.txt" ,"w");
if (!in) {
   printf("\n Can't openning a file .\n");
   getchar();
   exit(1);
   }

printf("\n ENTER >> # << for END . \n");
do {
   ch = getchar();
   putc(ch,in);
   }while (ch != '#');

fclose(in);

out = fopen("/home/arash/Documents/B.txt","w");
if (!out) {
   printf("\n Can't openning a file .\n");
   getchar();
   exit(1);
   }

in = fopen("/home/arash/A.txt" ,"r");
if (!in) {
   printf("\n Can't openning a file .\n");
   getchar();
   exit(1);
   }


do {
   ch =getc(in);
   putc(ch,out);
   }while (ch != EOF);

fcloseall();
printf("\n file transfered ");
printf("\n\t\t  >> Good luck <<  \t\t\n");

getchar();
return 0;
}
//---------------------------------------
//
// ENTER >> # << for END . 
//When day When time WhiteCrow1 comeing back.
//(WhiteCrows1)        
//#
//
// file transfered 
//		  >> Good luck <<  		
//
//---------------------------------------
//=================================================================================
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int main(void) {
FILE *fp;
char str[80];

if (!(fp = fopen("test.txt" , "w+"))) {
   printf("\n Cant't opening the file . \n");
   getchar();
   exit(1);
   }

printf("\n >> Enter strings ( press ENTER button for end ) <<\n");
while (1) {
      gets(str);
      if (!(str[0]))
         break;
      strcat(str,"\n");
      fputs(str,fp);
      }

rewind(fp);

printf("\n The content of file is : \n\n");

fgets(str,79,fp);

while (!feof(fp)) {
      printf("%s" ,str);
      fgets(str,79,fp);
      }

fclose(fp);
getchar();
return 0;
}
//---------------------------------------
//
// >> Enter strings ( press ENTER button for end ) <<
//This is an example for EDU.
//
//
// The content of file is : 
//
//This is an example for EDU.
//
//---------------------------------------
//=================================================================================

  FILE (type)

File control structure for streams.

  typedef struct {
    short          level;
    unsigned       flags;
    char           fd;
    unsigned char  hold;
    short          bsize;
    unsigned char *buffer, *curp;
    unsigned       istemp;
    short          token;
  } FILE;

Defined in  stdio.h