package test2;

import java.util.Scanner;

public class code012 {

	public static void main(String[] args) {
		Scanner input = new Scanner(System.in);
        System.out.print("STB成绩是:");
        int stb =input.nextInt();
        System.out.print("JAVA成绩是:");
        int java =input.nextInt();
        System.out.print("SQL成绩是:");
        int sql =input.nextInt();
        System.out.println("-----------------------------------------------");
        System.out.println("STB\tJAVA\tSQL");
        System.out.println(stb+"\t"+java+"\t"+sql);
        System.out.println("-----------------------------------------------");
        
        int diff = java-sql;
        double avg = (java+sql+stb)/3;
        System.out.println("JAVA与SQL成绩差是:"+diff);
        System.out.println("三门成绩差平均数是:"+avg);
        
    
        
	}

}