C#“使用”语法

使用C#语法实现字符串操作

csharp
string str1 = "Hello";
string str2 = "World";
string result = str1 + " " + str2;
Console.WriteLine(result);

csharp
string str = "Hello World";
int length = str.Length;
Console.WriteLine(length);

csharp
string str = "apple,banana,orange";
string[] fruits = str.Split(',');
foreach (string fruit in fruits)
{
    Console.WriteLine(fruit);
}

apple
banana
orange

csharp
string str = "Hello World";
string newStr = str.Replace("World", "C#");
Console.WriteLine(newStr);

csharp
int num = 123;
string str = num.ToString();
Console.WriteLine(str);

csharp
string name = "Alice";
int age = 25;
string message = string.Format("My name is {0} and I'm {1} years old.", name, age);
Console.WriteLine(message);

csharp
string str1 = "Hello";
string str2 = "World";
bool isEqual = str1.Equals(str2);
Console.WriteLine(isEqual);