如何使控制台应用程序运行,直到用户输入"Q","q","Quit"为止.或“退出"终止吗? [英] How do I make an console application run until the user enters "Q", "q", "Quit" or "quit" to terminate it?
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问题描述
如何在用户输入"Q","q","Quit"或"quit"以终止它之前运行控制台应用程序?
How do I make an console application run until the user enters "Q", "q", "Quit" or "quit" to terminate it?
这是我当前的代码:
public class Class1
{
[STAThread]
static void Main(string[] args)
{
string userName;
int i = 0, totalCal = 0, cal = 1;
Console.WriteLine("Welcome to the magical calorie counter!");
Console.WriteLine();
Console.Write("Enter in your name -> ");
userName = Console.ReadLine();
for (i = 0; i <= 10; i++)
{
Console.WriteLine("Hello {0}.....Let's add some calories!!", userName);
}// end for loop
Console.WriteLine();
while (cal != 0)
{
Console.Write("Enter some Calories:<or 0 to quit>: ");
cal = Convert.ToInt32(Console.ReadLine());
Console.WriteLine("You entered {0}", cal);
Console.WriteLine();
totalCal += cal;
Console.WriteLine();
Console.WriteLine("-------------------So far you have a total of {0}------------------", totalCal);
Console.WriteLine();
Console.WriteLine();
}// end of while
}// end of amin
}//end of class
推荐答案
假设您的程序中没有其他错误,只需添加几行这样的内容:
Assuming there aren't any other bugs in your program... just add a couple lines like this:
using System;
class Class1
{
[STAThread]
static void Main(string[] args)
{
string userName;
string line;
int i = 0, totalCal = 0, cal = 1;
Console.WriteLine("Welcome to the magical calorie counter!");
Console.WriteLine();
Console.Write("Enter in your name -> ");
userName = Console.ReadLine();
for (i = 0; i <= 10; i++)
{
Console.WriteLine("Hello {0}.....Let's add some calories!!", userName);
}// end for loop
Console.WriteLine();
while (true)
{
Console.Write("Enter some Calories:<or 0 to quit>: ");
line = Console.ReadLine().ToLower();
if (line == "q" || line == "quit")
{
break;
}
else if (!int.TryParse(line, cal))
{
Console.WriteLine("Not a valid option. Please try again.");
continue;
}
Console.WriteLine("You entered {0}", cal);
Console.WriteLine();
totalCal += cal;
Console.WriteLine();
Console.WriteLine("-------------------So far you have a total of {0}------------------", totalCal);
Console.WriteLine();
Console.WriteLine();
}// end of while
}// end of amin
}
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