Deleting returned pointers

I''m moderately sure I have a memory leak in one of my functions, but I''m completely out of ideas on how to fix it... My function returns a pointer a string it just created with new... the return value of the function is immediately passed as a parameter to another function in my main loop... char * mrexample(int length) { char * somestring=new char[length]; //This is never deleted sprintf(somestring,"Blahblah"); //Putting something there... return somestring; //Returning it... } //somewhere else in the program MessageBox(0,mrexample(5),mrexample(5),MB_OK); //Program ends This is just a simplified version because I doubt anyone wants to wade through my code... The memory that was allocated in mrexample never gets deleted... =/