copying a tar file in a C(MS Dos/Windows) program

[smitha]

How can I copy a tar file into another file say xyz using a C program in windows/DOS environment

[mattst88]

FILE *tar;
FILE *new;
char buffer[4096];

tar = fopen("mytarfile.tar", rb);
new = fopen("mynewfile.tar", w+b);
while ( !feof(tar) ) {
	fread(buffer, 1, 4094, tar);
	fwrite(buffer, 1, 4094, new);
}
fclose(tar);
fclose(new);

That's really off the top of my head, virtually no error checking.

Edited December 21, 2005 by mattst88

[LLXX]

Why not just invoke a cmd shell with the appropriate command? No need to write your own copier...