C#學習7

1、變量交換

int a = 10;
int b = 5;
Console.WriteLine("開始a={0},b={1}",a,b);
a = a + b;
b = a - b;
a = a - b;
Console.WriteLine("交換後a={0},b={1}",a,b);

2、Console.ReadLine()

Console.WriteLine("在輸入語句前：");
string input = Console.ReadLine();
Console.WriteLine("在輸入語句後。");
Console.WriteLine(input);