getc, getchar, fgetc, getw - get character or word from stream
int getc(FILE *stream)
int fgetc(FILE *stream)
int getw(FILE *stream)
Getc returns the next character from the named input stream.
Getchar() is identical to getc(stdin).
Fgetc behaves like getc, but is a genuine function, not a macro; it may
be used to save object text.
Getw returns the next int from the named input stream. It returns the
constant EOF upon end of file or error, but since that is a good integer
value, feof and ferror(3) should be used to check the success of getw.
Getw assumes no special alignment in the file.
clearerr(3), fopen(3), putc(3), gets(3), scanf(3), fread(3), ungetc(3).
These functions return the integer constant EOF at end of file, upon read
error, or if an attempt is made to read a file not opened by fopen. The
end-of-file condition is remembered, even on a terminal, and all
subsequent attempts to read will return EOF until the condition is
cleared with clearerr(3).
Because it is implemented as a macro, getc treats a stream argument with
side effects incorrectly. In particular, `getc(*f++);' doesn't work