public static void Main()
string originalString = "Hello programmer welcome to the world of programming";
string replacedString = ReplaceWord(originalString, "programmer", "coder");
replacedString = ReplaceWord(replacedString, "programming", "coding");
Console.WriteLine(replacedString);
Console.WriteLine("\nBy Avinash Raghuvanshi\nSection:- A\nRoll No.:- 22");
public static string ReplaceWord(string input, string oldWord, string newWord)
string[] words = input.Split(' ');
for (int i = 0; i < words.Length; i++)
if (words[i].Equals(oldWord))
return string.Join(" ", words);