void C_fformat (void);
void C_remove (char *fname);
void C_rename (char *fname1, char *fname2);
void C_fopen (char *fname, char *mode, char *handler);
int C_fgetc (char *handler);
void C_fputc (int k, char *handler);
int C_fgets (char *handler, char *string);
void C_fputs (char *string, char *handler);
int C_fread (char *handler, int length, char *string);
void C_fwrite (char *string, int length, char *handler);
void C_fclose (char *handler);
int C_findfirst (char *fname, char *handler);
int C_findnext (char *fname, char *handler);