请高手帮忙解决一个问题,本人菜鸟,急!!!!
从1到424的整数中,4出现的次数。(本人学C#的,请用C#语言来解决,谢谢!!!)
static void Main(string[] args) { string s = null; int count = 0; for (int i = 0; i <= 424; i++) { s += i.ToString(); } foreach (char c in s.ToCharArray()) { if (c == '4') { count++; } } Console.Write("count={0}", count); Console.ReadKey(); }2,3,8的直接错误