Program to count vowels, consonant, digits and special characters in string. -- Given a string and the task is to count vowels, consonant, digits and special character in string. Special character also contains the white space.

count-vowels-consonant-digits-special-characters-string.cs

/*
Program to count vowels, consonant, digits and special characters in string.
Given a string and the task is to count vowels, consonant, digits and special character in string. Special character also contains the white space.

Problem Link: https://www.geeksforgeeks.org/program-count-vowels-consonant-digits-special-characters-string/

Solution Time Complexity: O(n) -> Where 'n' is the length of the string.
*/


using System;
					
public class Program
{
	public static void Main()
	{
		int vowel = 0, consonant = 0, numeric = 0, special = 0;
		//Assign the values to the string
		string sentence = " A1 B@ d  adc";
		
		string lower = sentence.ToLower();
	
		//Iterate the characters of lower string
		foreach(char c in lower.ToCharArray())
		{
			//Check if the character is a letter
			if((c >= 'a' && c <= 'z'))
			{
				if(c == 'a' || c == 'e' || c == 'i' || c == 'o' || c == 'u')
				{
					//Increase the counter of vowel by 1
					vowel++;
				}
				else
				{
					//Increase the counter of consonant by 1
					consonant++;
				}
			}
			//Check if the character is numeric
			else if(c >= '0' && c <= '9')
			{
				//Increase the counter of numeric by 1
				numeric++;
			}
			//The charcater is a special character
			else
			{
				//Increase the counter of special by 1
				special++;
			}
		}
		
		//Print the counter result
		Console.WriteLine("Vowels: {0} \nConsonant: {1} \nNumeric: {2} \nSpecial: {3}", vowel, consonant, numeric, special);
	}
}