score.java

来自「Java 入门书的源码」· Java 代码 · 共 34 行

//Copyright (c) 1998, Arthur Gittleman
//This example is provided WITHOUT ANY WARRANTY either expressed or implied.

/*  Uses nested if-else statements
 *  to choose among alternatives
 *  to assign letter grades to test scores.
 *  Terminate input with a negative value
 *  used as a sentinel.
 */

import iopack.Io;
public class Score {
  public static void main(String [] args) {
    int score = Io.readInt("Enter a test score or -1 to quit");
    while (score >= 0) {
      if (score < 50)
        System.out.println("Score " + score + " receives an F");
      else if (score >= 50 && score < 60)
        System.out.println("Score " + score + " receives a D");
      else if (score >= 60 && score < 80)
        System.out.println("Score " + score + " receives a C");
      else if (score >=80 && score < 90)
        System.out.println("Score " + score + " receives a B");
      else if (score >= 90 && score <= 100)
        System.out.println("Score " + score + "receives an A");
      else 
        System.out .println
                    ("Score can't be greater than 100, try again");   
      score = Io.readInt("Enter a test score or -1 to quit");
    }
    Io.readString("Press any key to exit");   // Added for IDE use
  }
}