i am a new user of this site , i want to know how can we develop a program that can be used in shops 4 billing,which should be more user friendly,having fine look,and more convienentpls tell how to do this program,

develop it with a GUI, and there are lots of ways to do that. Some depend on the operating system while others are independent of the operating system. You can get free ones and you can pay several thousand $$ for others. But if you are new to c++ (such as 1st year student) then all of them are probably way beyond your current ability to grasp.