static void Main(string[] args)
{
string name = "asher"; //方法1
string str1 = "hello " + name;
//方法2
string str2 = string.Format("hello {0}", name);
//方法3
string str3 = $"hello {name}"; Console.WriteLine(str1);
Console.WriteLine(str2);
Console.WriteLine(str3);
Console.ReadKey();
}
运行结果: