try cppcheck

.gitignore

@@ -1,6 +1,7 @@
 *~
 .*.swp
 *.o
+cppcheck.txt
 approximate-pi
 linked-list
 mandelbrot

Makefile

@@ -9,7 +9,14 @@ all: $(TARGETS) $(EXTRAS)
 
 .PHONY: clean
 clean:
-	rm -f $(TARGETS) $(EXTRAS) *.o *~
+	rm -f $(TARGETS) $(EXTRAS) *.o *~ cppcheck.txt
+
+.PHONY: cppcheck
+cppcheck: cppcheck.txt
+
+cppcheck.txt: *.c *.h
+	cppcheck . 2> $@
+	cat $@
 
 mandelbrot: mandelbrot.c
 	$(CC) $(CFLAGS) $(shell sdl-config --cflags) -o $@ $< $(shell sdl-config --libs) -lm