所以我正在制作一個“機器人”程式，當機器人問你問題并且你輸入答案時。當機器人詢問您的年齡時，顯然您只能回答數字。如果您嘗試插入非數字（例如：daskjldsjal），它將產生未處理的例外。我嘗試使用TryParse，但它仍然無法正常作業。這是代碼
` //ask age
Thread.Sleep(2000);
Console.WriteLine("(OwO) How old are you? (answer only in number pleaseee)");
int age = Convert.ToInt32(Console.ReadLine());
if (!int.TryParse(Console.ReadLine(), out age))
{
Thread.Sleep(2000);
Console.WriteLine("(-w-)");
Thread.Sleep(2000);
Console.WriteLine("(-w-) I've told you to only answer in number");
Thread.Sleep(2000);
Console.WriteLine("(-w-) You are lucky my developer knows how to include a code to prevent unhandled exception.");
Thread.Sleep(2000);
Console.WriteLine("(???) Otherwise that would have crashed me!!!!");
Thread.Sleep(2000);
Console.WriteLine("(-w-) Again, how old are you? (don't forget to answer in number)");
}`
我是任何編程的新手，如果這看起來如此平凡/微不足道，我深表歉意。謝謝你。
我希望它顯示錯誤訊息（我已經告訴過你等等），而且我認為 try 和 catch 不會起作用，因為它具有稍后將被詢問的值。
uj5u.com熱心網友回復：
int age = Convert.ToInt32(Console.ReadLine());
沒用并導致錯誤
在您的嘗試決議中添加一個“int”以使其像這樣
Thread.Sleep(2000);
Console.WriteLine("(OwO) How old are you? (answer only in number pleaseee)");
if (!int.TryParse(Console.ReadLine(), out int age))
{
Thread.Sleep(2000);
Console.WriteLine("(-w-)");
Thread.Sleep(2000);
Console.WriteLine("(-w-) I've told you to only answer in number");
Thread.Sleep(2000);
Console.WriteLine("(-w-) You are lucky my developer knows how to include a code to prevent unhandled exception.");
Thread.Sleep(2000);
Console.WriteLine("(???) Otherwise that would have crashed me!!!!");
Thread.Sleep(2000);
Console.WriteLine("(-w-) Again, how old are you? (don't forget to answer in number)");
}
'Out' 關鍵字不需要初始化。
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標籤：C＃细绳解析整数
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