questions about a backup program for the MS-DOS environment

[D'Arcy J.M. Cain]

In article <12459 at wpi.wpi.edu> jhallen at wpi.wpi.edu (Joseph H Allen) writes:
>In article <1990Apr25.125806.20450 at druid.uucp> darcy at druid.UUCP (D'Arcy J.M. Cain) writes:
>>     while ((n = fread(buf, sizeof(char), BUFSIZ, infile)) != 0)
>>		fwrite(buf, sizeof(char), n, outfile);
>
>No, no, no Yuck!  Don't use the C functions, and don't use such tiny buffers.
>(no wonder it's so slow :-)
>
>Try (in small or tiny model):
>
>#include <dos.h>
> [ ... A bunch of assembler code shoe-horned into a C program]

Double yuck.  Not only does this depend on a specific hardware platform,
a specific OS, a specific vendor's compiler but even 2 specific models
of the compiler out of 6 possible.  I bet someone would be hard pressed
to modify this code to make it less portable than it is.

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