SystemIII /usr/src/cmd/echo.c
main(argc, argv)
char **argv;
{
register char *cp;
register int i, wd;
int j;
if(--argc == 0) {
putchar('\n');
exit(0);
}
for(i = 1; i <= argc; i++) {
for(cp = argv[i]; *cp; cp++) {
if(*cp == '\\')
switch(*++cp) {
case 'b':
putchar('\b');
continue;
case 'c':
exit(0);
case 'f':
putchar('\f');
continue;
case 'n':
putchar('\n');
continue;
case 'r':
putchar('\r');
continue;
case 't':
putchar('\t');
continue;
case '\\':
putchar('\\');
continue;
case '0':
j = wd = 0;
while ((*++cp >= '0' && *cp <= '7') && j++ < 3) {
wd <<= 3;
wd |= (*cp - '0');
}
putchar(wd);
--cp;
continue;
default:
cp--;
}
putchar(*cp);
}
putchar(i == argc? '\n': ' ');
}
exit(0);
}