i am getting this error at compile (actually this is a very simple project and the syntax is absolutely ok)
E:\\proj1\\Makefile.win [Build Error] [main.o] Error 1
r&d is definitely a problem. Try surrounding it with quotes: "c:\users\r&d" and hope for the best. If it doesn't work, change the folder to something without an ampersand (you don't need to reinstall Windows for that, just create another user).