C#计算字符串中的元音数量

using System;

public class Demo {
   public static voID Main() {
      string myStr;
      int i, len, vowel_count, cons_count;

      myStr = "Avengers";

      vowel_count = 0;
      cons_count = 0;

      // find length
      len = myStr.Length;

      for(i=0; i<len; i++) {
         if(myStr[i] =='a' || myStr[i]=='e' || myStr[i]=='i' || myStr[i]=='o' || myStr[i]=='u' || myStr[i]=='A'
            || myStr[i]=='E' || myStr[i]=='I' || myStr[i]=='O' || myStr[i]=='U') {
            vowel_count++;
         } else {
            cons_count++;
         }
      }

      Console.Write("\nVowels in the string: {0}\n", vowel_count);
   }
}