题解 | #计算某字符出现次数#

using System;
public class Program {
    public static void Main() {
        string inputString = Console.ReadLine ().ToLower();
        string inputChar = Console.ReadLine ().ToLower();

     
        int count = 0;
        foreach (char c in inputString ) {
            if (c.ToString() == inputChar) {
                count++;
            }
        }
        Console.Write(count);
    }
}