gcc -D DEBUG

Author: ivanbrennan

prog.18.2.c

@@ -0,0 +1,33 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+int process (int i1, int i2)
+{
+	int val;
+
+#ifdef DEBUG
+	fprintf (stderr, "process (%i, %i)\n", i1, i2);
+#endif
+	val = i1 * i2;
+#ifdef DEBUG
+	fprintf (stderr, "return %i\n", val);
+#endif
+	return val;
+}
+
+int main (int argc, char *argv[])
+{
+	int arg1 = 0, arg2 = 0;
+
+	if (argc > 1)
+		arg1 = atoi (argv[1]);
+	if (argc == 3)
+		arg2 = atoi (argv[2]);
+#ifdef DEBUG
+	fprintf (stderr, "processed %i arguments\n", argc - 1);
+	fprintf (stderr, "arg1 = %i, arg2 = %i\n", arg1, arg2);
+#endif
+	printf ("%i\n", process (arg1, arg2));
+
+	return 0;
+}