Working with the Unix OS

C Libraries
int li; /* number of lines on the screen */
int co; /* number of columns on the screen */
char *msg="Welcome to UNIX" ;
if ((name=getenv("TERM")) == NULL)
{
fprintf(stderr, "%s: can't find terminal type\n",
argv[0]); exit(1);
}
switch (tgetent(buff, name))
{
case -1:
fprintf(stderr, "%s: can't read termcap file\n", argv[0]);
exit(1);
case 0:
fprintf(stderr, "%s: can't find entry for %s\n",
argv[0],name);
exit(1);
}
}
cl = tgetstr("cl",&ap);
cm = tgetstr("cm",&ap);
co = tgetnum("co");
li = tgetnum("li");
printf(%s%s%s\n", cl, tgoto(cm, (co/2)-(strlen(msg)/2),li/2), msg);
79