use return in void method

The void type translated into Chinese means the empty type. 
　　Generally, when declaring variables, void type declaration is not used, and functions are commonly declared void type. 
　　A function declared with the void type means that it does not need to return a value. 
　　However, sometimes it is necessary to forcibly terminate the function inside the function to continue running the following statement. In this case, use the return statement. The format is: 
　　return; 
　　If you use int, float, double, etc. to declare the function body, you need to return the value. The format at this time is: 
　　return value; 
　　for example: 
　　return 0; 
　　return 0.1;