public class Ex07 { public static void main(String[] args){ char ch = (char)(Math.random()*4+'A'); int score = 0; switch(ch){ case 'A': score = 90; break; case 'B': score = 80; break; case 'C': score = 70; break; case 'D': score = 60; break; } System.out.printf("score : %d", score); } }