Why can't my makefile compiled?

My Makefile is like this:

execute: Main.o Student.o Course.o Enrollment.o PrintData.o StoreData.o LoadData.o g++ -o execute Main.o Student.o Course.o Enrollment.o PrintData.o StoreData.o LoadData.o Main.o: Main.cpp Student.h Course.h Enrollment.h PrintData.h StoreData.h LoadData.h g++ -c Main.cpp Student.o: Student.cpp Student.h g++ -c Student.cpp Course.o: Course.cpp Course.h g++ -c Course.cpp Enrollment.o: Enrollment.cpp Student.h Course.h Enrollment.h g++ -c Enrollment.cpp PrintData.o: PrintData.cpp Student.h Course.h Enrollment.h PrintData.h g++ -c PrintData.cpp StoreData.o: StoreData.cpp Student.h Course.h Enrollment.h StoreData.h g++ -c StoreData.cpp LoadData.o: LoadData.cpp Student.h Course.h Enrollment.h LoadData.h g++ -c LoadData.cpp clean: rm *.o execute run: make execute && ./execute

My main:

#include "Student.h" #include "Course.h" #include "Enrollment.h" #include "PrintData.h" #include "StoreData.h" #include "LoadData.h"

Student.cpp : #include "Student.h"

Course.cpp: #include "Course.cpp"

Enrollment.cpp: #include "Enrollment.h" #include "Course.h" #include "Student.h"

PrintData.cpp:

#include "Enrollment.h" #include "Student.h" #include "Course.h" #include "PrintData.h"

StoreData.cpp:

#include "Enrollment.h" #include "Student.h" #include "Course.h" #include "StoreData.h"

LoadData.cpp

#include "Enrollment.h" #include "Student.h" #include "Course.h" #include "LoadData.cpp"

I cant run my make file to compile? It keeps giving me "Nothing to be done", or "No targets specificed and no makefile found. Stop". Please help