c# - 已解决数学最后一个str + 1 return 50(Solved Mathing Last str + 1 return 50)

Question

Hello iam trying to math this to get result = 2

(您好，IAM尝试对此进行数学运算以获得结果= 2)

string str = "1005480701";
Console.WriteLine(str.Last() + 1);

it should be 2 but the result is 50 can someone explain why that happen please

(应该是2，但结果是50，有人可以解释为什么会发生吗？)

  ask by AlexN translate from so

Answer 1

string.Last() returns the char '1' .

(string.Last()返回char '1')

The UTF-16 code for '1' is 49 and if you add 1 to 49 , you get 50 .

('1'的UTF-16代码为49 ，如果将1加到49 ，则得到50 。)

You have to transform the character to the number it represents, for example with int.Parse() .

(您必须将字符转换为它表示的数字，例如使用int.Parse() 。)

...
Console.WriteLine(int.Parse(str.Last().ToString()) + 1);
...