From 8682553498d32d3c18dea41c598ab40de18404a3 Mon Sep 17 00:00:00 2001 From: user Date: Thu, 16 Jul 2026 07:30:34 +0200 Subject: tools: wc, head, and an argc/argv demo (args) + libc.c helpers - c/libc.c: shared C helpers linked into every program - putu (print decimal), atou (parse decimal), argv_parse (tokenize getargs() into argc/argv). - wc: count lines/words/chars of stdin. head [n]: first n lines (drains rest to EOF). args: argc/argv demo. - pid now uses libc putu; build.sh links libc.c; Makefile CBLOBS + libc dep. - README: document the new tools + argv_parse. - verified: 'args one two three' -> argc=3/argv[..]; wc '2 3 16'; head 2. --- c/args.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) create mode 100644 c/args.c (limited to 'c/args.c') diff --git a/c/args.c b/c/args.c new file mode 100644 index 0000000..c6f4db3 --- /dev/null +++ b/c/args.c @@ -0,0 +1,12 @@ +#include "gbos.h" +/* args: an argc/argv demo. Splits its argument string into argv[] and prints + argc plus each argument. Try: `args one two three` */ +void main(void) { + char *argv[8]; + unsigned char argc = argv_parse(argv, 8); + unsigned char i; + puts("argc="); putu(argc); nl(); + for (i = 0; i < argc; i++) { + puts("argv["); putu(i); puts("]="); puts(argv[i]); nl(); + } +} -- cgit v1.3.1-sl0p