Question

How to use string.CompareTo() to compare two strings in C#

Answer 1

using System;

namespace ConsoleApplication_C_Sharp
{
    class Program
    {
        static void Main(string[] args)
        {
            string s1 = "abc";
            string s2 = "abc";
            int n = s1.CompareTo(s2); // 0 : s1 = s2
            Console.WriteLine(n);

            s1 = "abc";
            s2 = "Abc";
            n = s1.CompareTo(s2); // -1 = s1 < s2
            Console.WriteLine(n);

            s1 = "Abc";
            s2 = "abc";
            n = s1.CompareTo(s2); // 1 = s1 > s2 
            Console.WriteLine(n);

            s1 = "a";
            s2 = "A";
            n = s1.CompareTo(s2); // -1 : s1 < s2
            Console.WriteLine(n);

            s1 = "b";
            s2 = "a";
            n = s1.CompareTo(s2); // 1 : s1 > s2
            Console.WriteLine(n);
        }
    }
}


/*
run:
     
0
-1
1
-1
1
 
*/

 

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