futzing around with macros some more

Makefile

@@ -1,7 +1,9 @@
 CD = cd
 RM = rm -v
 
-export CD RM
+CFLAGS := -std=c99
+
+export CD RM CFLAGS
 
 
 all:

gowrikumar/src/04b-macrodef.c

@@ -0,0 +1,42 @@
+/**
+ * :author: Dan Buch (daniel.buch@gmail.com)
+ */
+
+#include <stdio.h>
+
+#define f(a, b) a##b
+#define g(a) #a
+#define h(a) g(a)
+#define border(c) \
+    for (int i = 0; i < 60; i++) { \
+        printf(c); \
+    } \
+    printf("\n");
+
+int main()
+{
+    printf("%s\n", h(f(1, 2)));
+    printf("%s\n", g(f(1, 2)));
+
+    printf("%s\n", g(printf("dogs rule cats drool\n")));
+
+    char * hambones = "Cats! " g(ham);
+    char * bonesham = "Meats! " g(bones);
+    char * tmp;
+
+    border("-");
+    printf("bonesham = %s\n", bonesham);
+    printf("hambones = %s\n", hambones);
+
+    border("-");
+    tmp = f(ham, bones);
+    f(ham, bones) = f(bones, ham);
+    f(bones, ham) = tmp;
+
+    printf("bonesham = %s\n", bonesham);
+    printf("hambones = %s\n", hambones);
+    return 0;
+}
+
+/* vim:filetype=c:fileencoding=utf-8
+ */

gowrikumar/src/Makefile

@@ -4,7 +4,7 @@ ALL_BIN := $(patsubst %.c,$(BINDIR)/%,$(wildcard *.c))
 
 
 $(BINDIR)/%: %.c
-	$(CC) -o $@ $<
+	$(CC) $(CFLAGS) -o $@ $<
 
 all: $(ALL_BIN)