Return Statement stops the execution of the code and returns the flow of the program to the calling function. The "return" function may or may not return a value. Usually all non-void functions must return a value. This belongs to control structures.

   return expression;

  #include <iostream.h>
  void main()
  {
  	int x,y,h;
      x=10;
      y=20;
      h=max(x,y);
      cout << "The Highest number is::" << h << endl;
  }
  int max(int l, int m) 
  {
  if (l > m) 
   {
   	return l;
   } 
  else 
   {
   	return m;
   }
  }

  The Highest number is::20

In the above example, the return statement control structure is explained in the following manner. the "main()" is a void function so it does not return a value, but the "max" function returns an integer value since its return type is "int".