输入一行字符，分别统计出其中英文字母、空格、数字和其它字符的个数。...

代码说明：

输入一行字符，分别统计出其中英文字母、空格、数字和其它字符的个数。-Enter the characters in his entourage, the statistics were one of the letters, spaces, numbers and the number of other characters.