C# 字符串操作符
C# 中有两个字符串操作符:等号和不等号。
示例
让我们看一个等号操作符的示例 −
using System; public class Demo { public static void Main() { string str1 = "Amit"; string str2 = " "; Console.WriteLine("Is string1 null or empty? = "+string.IsNullOrEmpty(str1)); Console.WriteLine("Is string2 null or empty? = "+string.IsNullOrEmpty(str2)); Console.WriteLine("Is string1 equal to str2? = "+str1 == str2); } }
输出
Is string1 null or empty? = False Is string2 null or empty? = False False
示例
现在让我们看一个 C# 不等号操作符的示例 −
using System; public class Demo { public static void Main() { string str1 = "abcdef"; string str2 = "abcdef"; Console.WriteLine("Is string1 null or empty? = "+string.IsNullOrEmpty(str1)); Console.WriteLine("Is string2 null or empty? = "+string.IsNullOrEmpty(str2)); bool val = str1 != str2; Console.WriteLine("Is str1 not equal to str2? = "+val); } }
输出
Is string1 null or empty? = False Is string2 null or empty? = False Is str1 not equal to str2? = False
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