Added a simple makefile

iris_c/Makefile

@@ -0,0 +1,13 @@
+CC = gcc
+CFLAGS = -Wall -Wextra -O2
+TARGET = main
+
+.PHONY: all clean
+
+all: $(TARGET)
+
+$(TARGET): main.c random.c random.h
+	$(CC) $(CFLAGS) -o $@ main.c random.c
+
+clean:
+	rm -f $(TARGET)