输入输出

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace 输入输出
{
    class Program
    {
        static void Main(string[] args)
        {
            /*float a = 15.6f, b = 87.7f;\
            String t;
            //注意：如果数据类型是单精度，那么赋值是值的后面加上字母f
            char sex = '男';
            char ch = 'A';
            String name = "张三";
            //注意：输入语句默然输入的值是String类型的书
            //t=
            Console.WriteLine(a);
            Console.WriteLine(b);
            Console.WriteLine(sex);
            Console.WriteLine(ch);
            Console.WriteLine(name);*/
            String brand= "爱国者F928";
            float weight = 12.4f;
            String type = "内置锂电池";
            int price = 499;
            Console.WriteLine("品牌:"+brand);
            Console.WriteLine("重量："+weight);
            Console.WriteLine("电池类型："+type);
            Console.WriteLine("价格："+price);
            int a = (int)(3.9 + 10);
            Console.WriteLine(a);
            String num1 ="1234";
            double num2;
            num2 = System.Convert.ToDouble(num1)+1;
            Console.WriteLine(num2);
            double score1, score2, score3;
            Console.WriteLine("请输入STB的分数：");
            score1=Convert.ToDouble(Console.ReadLine());
            Console.WriteLine("请输入JAVA的分数：");
            score2=Convert.ToDouble(Console.ReadLine());
            Console.WriteLine("请输入SQL的分数：");
            score3=Convert.ToDouble(Console.ReadLine());
            Console.WriteLine("---------------------------------");
            Console.WriteLine("STB" + "\t" + "JAVA" + "\t" + "SQL");
            Console.WriteLine(score1 + "\t"+score2 + "\t"+score3);
            Console.WriteLine("---------------------------------");
            double k, p;
            k = (score2 - score3);
            p = score1 + score2 + score3;
            Console.WriteLine("java课和sql课的分数之差："+k);
            Console.WriteLine("3门课的平均分"+p);

        }
    }
}