catrm

'cat' a file, then optionally 'rm' it. I just felt like writing C.
catrm.zip
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fcat.c (raw) (841B)

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 
   4 /* fcat copies data from file at `src` and appends it to
   5  to the file at `dst`, in 4kb (4096) chunks.
   6  returns EXIT_SUCCESS or EXIT_FAILURE. */
   7 int fcat(FILE *src, FILE *dst)
   8 {
   9         int ret = EXIT_FAILURE;
  10         size_t srcsiz;
  11         char buf[4096];
  12         size_t r, w, total = 0;
  13 
  14         fseek(src, 0, SEEK_END);
  15 	srcsiz = ftell(src);
  16         rewind(src);
  17 
  18         do {
  19                 r = fread(buf, sizeof(char), sizeof(buf), src);
  20                 if (ferror(src))
  21 			goto ABORT;
  22                 else {
  23                         w = fwrite(buf, sizeof(char), r, dst);
  24                         if (ferror(dst))
  25 				goto ABORT;
  26                         total += w;
  27                 }
  28         } while (!feof(src));
  29 
  30         if (total == srcsiz)
  31 		ret = EXIT_SUCCESS;
  32 
  33 ABORT:
  34         return ret;
  35 }
  36