more c snippets and adjust commenting

lua/snippet/c.lua

@@ -3,12 +3,15 @@ ls.add_snippets('c', {
     -- cond ? then : else statment
     i(1, 'cond'), t(' ? '), i(2, 'then'), t(' : '), i(3, 'else')
   }),
+
   s('stdlibs', {
-    -- cond ? then : else statment
+    -- the normal stuff
     t('#include <stdio.h>'),
     t({'', '#include <stdlib.h>'})
   }),
+
   s('die', {
+    -- message provieder when program is exiting
     t({
     'void die(const char *fmt, ...) {', '',
       'va_list ap;',
@@ -25,5 +28,30 @@ ls.add_snippets('c', {
       '  exit(1);',
       '}',
     })
-  })
+  }),
+
+  s({
+    name = 'get them opts!',
+    trig = 'getopt',
+    dscr = 'standard argument parser',
+  },
+    fmta(
+      [[
+      int c;
+
+      while ((c = getopt(argc, argv, "<OPTS>")) != -1) {
+        switch (c) {
+          case '<OPT1>': <OPT1RUN> break;
+          default: <DEFRUN> break;
+        }
+      }
+      ]],
+      {
+        OPTS = i(1, 'h'),
+        OPT1 = i(2, 'h'),
+        OPT1RUN = i(3, 'printf("help text\\n");'),
+        DEFRUN = i(4, 'printf("run %s -h for help\\n", argv[0]); return 1;'),
+      }
+    )
+  ),
 })