Create strcmp.cs

strcmp.cs

@@ -0,0 +1,82 @@
+// strcmp
+//Rextester.Program.Main is the entry point for your code. Don't change it.
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text.RegularExpressions;
+
+namespace Rextester
+{
+    public class Program
+    {
+        public static void Main(string[] args)
+        {
+            //Your code goes here
+            Console.WriteLine(string.Compare("Helz", "Hela"));
+            Console.WriteLine(strcmp("Helz", "Hela"));
+            Console.WriteLine("---");
+
+            Console.WriteLine(string.Compare("", "ABCD"));
+            Console.WriteLine(strcmp("", "ABCD"));
+            Console.WriteLine("---");
+
+            Console.WriteLine(string.Compare("aa", "a"));
+            Console.WriteLine(strcmp("aa", "a"));
+            Console.WriteLine("---");
+
+            Console.WriteLine(string.Compare("Hello", "World"));
+            Console.WriteLine(strcmp("Hello", "World"));
+            Console.WriteLine("---");
+
+            Console.WriteLine(string.Compare("ABCD", "abcdEghe"));
+            Console.WriteLine(strcmp("ABCD", "Hela"));
+            Console.WriteLine("---");
+
+            Console.WriteLine(string.Compare("GeeksForGeeks", "gEEksFORGeEKs"));
+            Console.WriteLine(strcmp("GeeksForGeeks", "gEEksFORGeEKs"));
+            Console.WriteLine("---");
+        }
+
+        static int strcmp(string s1, string s2)
+        {
+            int i;
+
+            var c1 = s1.ToCharArray();
+            var c2 = s2.ToCharArray();
+
+            for (i = 0; i < c1.Length && i < c2.Length; i++)
+            {
+                //Console.WriteLine(c1[i] + "," + c2[i]);
+
+                if (char.ToLower(c1[i]) == char.ToLower(c2[i]))
+                {
+                    continue;
+                }
+                else
+                {
+                    break;
+                }
+            }
+
+            // Console.WriteLine(i);
+
+            var ch1 = (c1.Length == i ? char.MinValue : c1[i]);
+            var ch2 = (c2.Length == i ? char.MinValue : c2[i]);
+
+            // Console.WriteLine(ch1 + "," + ch2);
+
+            if (ch1 == ch2)
+            {
+                 return 0;
+            }
+
+            if (ch1 < ch2)
+            {
+                 return -1;
+            }
+
+            return 1;
+        }
+    }
+}