program.cs

c#开发宝典 光盘内容。本光盘主要为书中的源程序

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

namespace Example5_14 {
    class Program {
        /// <summary>
        /// 求两个双精度浮点数的和
        /// </summary>
        /// <param name="x">双精度浮点数x</param>
        /// <param name="y">双精度浮点数y</param>
        /// <returns>x+y的和</returns>
        static double Add(double x, double y) {
            return x + y;
        }

        /// <summary>
        /// 求两个整数的和
        /// </summary>
        /// <param name="x">整数x</param>
        /// <param name="y">整数y</param>
        /// <returns>x+y的和</returns>
        static int Add(int x, int y) {
            return x + y;
        }

        /// <summary>
        /// 连接两个字符串
        /// </summary>
        /// <param name="x">字符串x</param>
        /// <param name="y">字符串y</param>
        /// <returns>连接后的字符串x+y</returns>
        static string Add(string x, string y) {
            return x + y;
        }

        static void Main(string[] args) {
            Console.WriteLine("5 + 3 的值为：{0}", Add(5, 3));
            Console.WriteLine("5.3 + 3.5 的值为：{0}", Add(5.3, 3.5));
            Console.WriteLine("Hello + World! 的值为：{0}", Add("Hello ", "World!"));
            Console.ReadLine();
        }
    }
}