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我不得不练习在C#中制作一个小程序。 我必须输入几个名字,如果names.count == 1,那么这只能说明:使用列表<T> C#
"aName Liked post."
if names.count ==2 then:
"aName and bName liked post."
if names.count > 2 then (for example count == 5):
"aName, bName and 3 others liked post."
其工作罚款> 2 == 1,但是当有2名即== 2,它抛出未处理的异常:
“未处理的异常信息:System.FormatException:索引(从零开始) 必须比 参数列表的大小大于或等于零且小于”
var names = new List<string>();
while (true)
{
Console.WriteLine("Enter name or hit ENTER to quit:");
var input = Console.ReadLine();
if (String.IsNullOrWhiteSpace(input))
{
break;
}
names.Add(input);
}
if (names.Count > 2)
{
Console.WriteLine("{0},{1} and {2} others liked your post.",names[0], names[1], names.Count-2);
} else if (names.Count == 2)
{
Console.WriteLine("{0} and {1} liked your post.", names[0], names[1]);
}
else if (names.Count == 1)
{
Console.WriteLine("{0} liked your post.", names[0]);
}
else
{
Console.WriteLine("No one liked");
}
'“{0}和{2}'Where is 1? – Gusman
您可以简单地查找String.Format并查看它为什么会引发FormatException。或者您可以读取错误消息。 – pm100
Console.WriteLine(”{0} and {0},名称[1]); 正确: Console.WriteLine(“{0}和{1}喜欢你的帖子”,名称[0],名称[ 1]); 我一直在为它奋斗约30分钟。非常感谢你的时间 – nomeepk