copy file function in C -

I try to copy the file using this function, but we have strange characters in the output file.

  Int filecopy (four filesource [], four file dependencies []) {good result = -1; Four c [1]; File * stream_r = fopen (file resource, "r"); FILE * stream_w = FOPN (file specificity, "W"); // When typing to write and write in file (([0] = (four) fgetc (stream_R)) = EOF {fprintf (stream_W, c); } // close clauses fclose (stream_R); Falcos (stream_w); Return result; }  

I do not know what is wrong. help please.

The problem is that c [1] will not work for a string In form, because it can not eliminate null byte, it should be

  char c [2] = {0};  

and c [2] should be int , like

  int c [2 ] = {0};   
 Because  fgetc ()  returns  int  so that your code is potentially overflowing  c [0]  , But you also have some other things that you can improve. 
 
 
 
 You do not need  c  for a code, you can declare it like this. / P> 
  int c;  
 
 and then  fprintf ()  instead of  fputc (); Use . 
 
 
 
 You have to check that none of the  fopen ()  calls are unsuccessful, otherwise your program \ code> NULL  indicator Due to Derences will introduce undefined behavior. 
 
 
 
 This is a strong version of your own program, which is with the problem fixed in your question 
 
  / * ** Function Return Value Mean * -1 Can not Open Source File * -2 Destination File Can not Open * 0 Success * / Int Filecopy (Four File Resources [], Four File Definitions []) {int c; File * stream_r; FILE * stream_W; Stream_r = FOPN (file processing, "r"); If (stream_r == faucet) return -1; Stream_w = FOPN (file density, "W"); // Write to write and write file (stream_W == NULL) {fclose (stream_R); Return -2; } While ((c = fgetc (stream_R)! = EOF) fputc (c, stream_W); Falcos (stream_r); Falcos (stream_w); Return 0; }