Transcription: Here, the subscript operator is overloaded for a second time. The client code uses this version of the operator to find the range of numbers that are associated with a letter grade. Notice that the letter grade is passed to the overloaded subscript operator as an argument of type char*. The overloaded subscript operator searches the array grade list for an element containing a letter grade that matches the argument. The return value of the operator is a long pair object containing number grades.