NAMES
        fclose  - close a file
        fgetc   - get a character from a file
        fprintf - format data to file (see printf())
        fputc   - put character to file
        fputs   - write string to file
        getchar - get a character from stdin
        printf    - put format data to stdout (see exec.library/rawdofmt)
        putchar - put character to stdout
        puts    - put string to stdout, followed by newline

   FUNCTION
        These functions work much like the standard C functions of the same
        names. The file I/O functions all use non-buffered AmigaDOS
        files, and must not be mixed with the file I/O of any C
        compiler. The names of these functions match those found in many
        standard C libraries, when a name conflict occurs, the function is
        generally taken from the FIRST library that was specified on the
        linker's command line.  Thus to use these functions, specify
        the amiga.lib library first.

        To get a suitable AmigaDOS filehandle, the dos.library/open() or
        dos.library/output() functions must be used.

        All of the functions that write to stdout expect an appropriate
        filehandle to have been set up ahead of time. depending on
        your C compiler and options, this may have been done by the
        startup code.  Or it can be done manually

        From C:
                extern ULONG stdout;
                /* remove the extern if startup code did not define stdout */
                stdout=Output();

        From assembly:
                XDEF    _stdout
                DC.L    _stdout ;<- Place result of dos.library/output() here.