以下是我的代码:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace JeffOrrisSimpleCalculator._1
{
class Program
{
static void Main(string[] args)
{
Console.WriteLine("Simple Calculator");
Console.WriteLine("\t1> Add");
Console.WriteLine("\t2> Subtract");
Console.WriteLine("\t3> Multiply");
Console.WriteLine("\t4> Divide");
Console.WriteLine("\t5> Quit");
Console.WriteLine();
Console.Write("Enter Selection: ");
string myValue = ValidateData();
Console.WriteLine(myValue);
Console.Write("Enter number one: ");
Console.ReadLine();
Console.Write("Enter number two: ");
Console.ReadLine();
string mySum = Add();
Console.WriteLine(mySum);
Console.Read();
}//end main
private static string ValidateData()
{
string temp = Console.ReadLine();
if ((temp == "1") || (temp == "2") || (temp == "3") || (temp == "4") || (temp == "5"))
{
//string Response = "Thank You";
//return Response;
return null;
}
else
{
string Response = "Please enter a valid selection";
return Response;
}
}//end ValidateData
private static string Add()
{
string numberOne = Console.ReadLine();
double temp1 = Convert.ToDouble(numberOne);
string numberTwo = Console.ReadLine();
double temp2 = Convert.ToDouble(numberTwo);
double total = temp1 + number2;
string myTotal = Convert.ToString(total);
return myTotal;
}
}//end class
}//end namespace
*我只关心add方法。我提示用户输入我需要使用add方法添加的2个数字。我相信我过度思考这一点。我习惯于Windows窗体而不是控制台应用程序。我无法弄清楚如何从Console.ReadLine中连续保存这些输入变量。
答案 0 :(得分:4)
我提示用户输入2个数字
是的,你正在提示用户 - 但是你完全忽略了他们的输入。这样:
Console.Write("Enter number one: ");
Console.ReadLine();
Console.Write("Enter number two: ");
Console.ReadLine();
应该更像是:
Console.Write("Enter number one: ");
string firstLine = Console.ReadLine();
Console.Write("Enter number two: ");
string secondLine = Console.ReadLine();
接下来,您需要了解如何将字符串转换为数字。查看该步骤的int.TryParse
等。
(您可能需要在询问“第二个”之前验证“第一个” - 考虑创建一个方法,该方法接受一个提示字符串并一直提示用户,直到他们实际输入一个数字 - 然后从该方法返回。 )