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VFWritef.md

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NAME

VFWritef - write a BCPL formatted string to a file (buffered) (V36)

SYNOPSIS

    count = VFWritef(fh, fmt, argv)
    D0               D1  D2    D3

    LONG VFWritef(BPTR, STRPTR, LONG *)

    count = FWritef(fh, fmt, ...)

    LONG FWritef(BPTR, STRPTR, ...)

FUNCTION

Writes the formatted string and values to the default output. This routine is assumed to handle all internal buffering so that the formatting string and resultant formatted values can be arbitrarily long. The formats are in BCPL form. This routine is buffered.

Supported formats are: (Note x is in base 36!) %S - string (CSTR) %Tx - writes a left-justified string in a field at least x bytes long. %C - writes a single character %Ox - writes a number in octal, maximum x characters wide %Xx - writes a number in hex, maximum x characters wide %Ix - writes a number in decimal, maximum x characters wide %N - writes a number in decimal, any length %Ux - writes an unsigned number, maximum x characters wide %$ - ignore parameter

Note: 'x' above is actually the character value - '0'.

INPUTS

fmt - BCPL style formatting string argv - Pointer to array of formatting values

RESULT count - Number of bytes written or -1 for error

BUGS As of V37, VFWritef() does NOT return a valid return value. In order to reduce possible errors, the prototypes supplied for the system as of V37 have it typed as VOID.

SEE ALSO

VFPrintf, VFPrintf, FPutC