In Python:

Write a program which calls the function getgrade() repeatedly until getgrade() returns a valid grade. getgrade() should prompt for and read in from the keyboard an integer in the range 0 to 100 and return it to the caller. If, however, the grade entered is outside the range 0 to 100 inclusive, getgrade() should raise a RuntimeError exception, indicating an invalid grade was entered. When your program receives a valid grade from getgrade(), it should display in which quartile the grade is in: first (75-100), second (50-74), third (25- 49), or fourth (0-24).