What is the process for calling multiple functions using the string "Mystring.ToUpper().FirstPart(3).Replace("M","Ok") in C# .net?

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To call multiple functions using the string "Mystring.ToUpper().FirstPart(3).Replace("M","Ok") in C# .net, you need to follow these steps:

1. Create a string variable and assign the initial value as "Mystring".
2. Use the ToUpper() function to convert the string to upper case.
3. Use the FirstPart(3) function to extract the first three characters of the string.
4. Use the Replace("M","Ok") function to replace all occurrences of the character "M" with "Ok".

Here is the code that implements the process:

// Step 1 string inputString = "Mystring";

// Step 2 string upperCaseString = inputString.ToUpper();

// Step 3 string firstThreeChars = upperCaseString.Substring(0, 3);

// Step 4 string finalString = firstThreeChars.Replace("M", "Ok");

// Output Console.WriteLine(finalString);

The output of the above code will be "OKY".