输入一段字符串，通过foreach循环将用户输入的字符串赋值给一个字符数组

 
            Console.WriteLine("请输入一段字符串：");
            string str = Console.ReadLine();
            char[] chs = new char[str.Length];
            int i = 0;
            //将字符串转成数组;

            foreach (var item in str)
            {               
                chs[i] = item;
                i++;
            }

            foreach (var item in chs)
            {
                Console.WriteLine(item);
            }

            Console.ReadKey();