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C# program to check given strings are equal or not using equal to (==) operator

C# example for strings comparison: Here, we are writing a C# - it will take strings as input and compare them with and without ignoring the case using equal to (==) operator.
Submitted by IncludeHelp, on April 09, 2019

Input two strings and check whether they are equal or not using C# program.

C# code for string comparison

Here, we are asking for two strings input from the user and checking them whether they are equal or not using == operator and also ignoring the case.

// C# program to check given strings are equal or not 
// using equal to (==) operator
using System;
using System.IO;
using System.Text;

namespace IncludeHelp
{
    class Test
    {
        // Main Method 
        static void Main(string[] args)
        {
            string str1;
            string str2;

            //input strings
            Console.Write("Enter a string: ");
            str1 = Console.ReadLine();
            Console.Write("Enter another string: ");
            str2 = Console.ReadLine();

            //comparing strings 
            if (str1 == str2)
                Console.WriteLine("\"{0}\" and \"{1}\" are equal", str1, str2);
            else
                Console.WriteLine("\"{0}\" and \"{1}\" are not equal", str1, str2);

            //another way 
            if ((str1 == str2) == true)
                Console.WriteLine("\"{0}\" and \"{1}\" are equal", str1, str2);
            else
                Console.WriteLine("\"{0}\" and \"{1}\" are not equal", str1, str2);

            //comparing by ignoring the case 
            //convert both strings in the same case 
            //either in uppercase or lowercase
            Console.WriteLine("By ignoring case...");
            if(str1.ToUpper() == str2.ToUpper())
                Console.WriteLine("\"{0}\" and \"{1}\" are equal", str1, str2);
            else
                Console.WriteLine("\"{0}\" and \"{1}\" are not equal", str1, str2);

            //hit ENTER to exit the program
            Console.ReadLine();
        }
    }
}

Output

First run:
Enter a string: IncludeHelp
Enter another string: IncludeHelp
"IncludeHelp" and "IncludeHelp" are equal
"IncludeHelp" and "IncludeHelp" are equal
By ignoring case...
"IncludeHelp" and "IncludeHelp" are equal

Second run:
Enter a string: includehelp
Enter another string: INCLUDEHELP
"includehelp" and "INCLUDEHELP" are not equal
"includehelp" and "INCLUDEHELP" are not equal
By ignoring case...
"includehelp" and "INCLUDEHELP" are equal

Third run:
Enter a string: IncludeHelp
Enter another string: IncludeHelp.com
"IncludeHelp" and "IncludeHelp.com" are not equal
"IncludeHelp" and "IncludeHelp.com" are not equal
By ignoring case...
"IncludeHelp" and "IncludeHelp.com" are not equal





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