How to Match a Substring From a String

1. Add the code in the main() method to get some inputs from the user.
   
   - Get the string
   - Get the sub string to match　　
   
   1. static void Main(string[] args)
   2. {
   3. //Get the string from the user
   4. Console.Write("Eneter the string:");
   5. string input = Console.ReadLine();
   7. //Get the sub string from the user
   8. Console.Write("Eneter the sub string:");
   9. string match = Console.ReadLine();　　　　　　　　
   10. }
   
   
   
2. Write the code in a function to match the sub-string within the input string and return True/False.
   
   1. private static bool substr(string input, string match)
   2. {
   3. //Create temp string
   4. string temp = "";
   6. for (int i = 0, k = 0; i < input.Length; i++)
   7. {
   8. //Match the value char by char of both string
   9. if (input[i] == match[k])
   10. {
   11. //if matches then add the char to temp variable
   12. temp += input[i];
   13. k++;
   14. }
   15. //If matching string completed
   16. if (k == match.Length) break;
   17. }
   18. //return the true/false on basis of matching
   19. return match.Equals(temp);
   20. }
   
   
   
3. Call the function with the 2 parameters, array and sum, from the main() method.
   
   1. Console.WriteLine("Output String is:");
   2. //Call the function and print its return value
   3. Console.WriteLine(substr(input, match).ToString());
   4. Console.ReadKey();
   

Result

1. If I provide ”nbacgddardsardo” as the string and “nagarro” as the sub-string then the output will be:
   
   Output: True
   
   
   
   
2. If I provide ”anagarorpa” as the string and “nagarro” as the sub-string then the output will be like:
   
   Output: False
   
   
   
   
3. If I provide ”nagarro01” as the string and “nagarro” as the sub-string then the output will be like:
   
   Output: True