CODEWITHSUNDEEP
c
Aimee Boyle
Aimee Boyle

Reputation: 11

I'm trying to copy one text file to another using c

I'm trying to copy one test file to another in C. However my code is not working the program runs fine and produces a file CircleCode_temp but there is nothing in the text file. Any ideas why its not working 

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

   char c; 

  int main(int argc, char **argv)
  {

  FILE *orginalFile = fopen("CircleCode1", "r");
  FILE *newFile = fopen("CircleCode_temp", "w");


    if (orginalFile == NULL | newFile == NULL)
     {
       printf("Cannot open file");
       exit(0);
     }


      while((c = fgetc(orginalFile))!=EOF)
      {
         fputc(c,newFile);
         c = fgetc(orginalFile);
       }


      fclose(orginalFile);
      fclose(newFile);

     return 0;
   }

Upvotes: 0

Views: 40

Answers (1)

David Schwartz
David Schwartz

Reputation: 182829

  while((c = fgetc(orginalFile))!=EOF)
  {
     fputc(c,newFile);
     c = fgetc(orginalFile);
   }

Two mistakes here:

  1. You call fgetc twice in the loop, which throws every other character away.

  2. You compare c to EOF. You're suppose to compare the return value of fgetc to EOF. If you think they're the same, remember that c is of type char and fgetc returns an int.

Also:

    if (orginalFile == NULL | newFile == NULL)

One mistake here. You have | which is bitwise OR, but you want ||, which is a logical OR.

Upvotes: 2

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