update exec name

Makefile

@@ -1,14 +1,15 @@
 CC = gcc
 CFLAGS = -O3
 LIBS = -lcjson
+EXEC = mc-libs-string
 
-all: make-libs-string
+all: $(EXEC)
 
-make-libs-string:
-	$(CC) $(CFLAGS) -o $@ make-libs-string.c $(LIBS)
+$(EXEC):
+	$(CC) $(CFLAGS) -o $(EXEC) ./src/main.c $(LIBS)
 
 tcc:
-	tcc -O3 -o make-libs-string make-libs-string.c ./cJSON/libcjson.a
+	tcc -O3 -o $(EXEC) ./src/main.c ./cJSON/libcjson.a
 
 clean:
-	rm make-libs-string
+	rm $(EXEC)