输入一页文字，程序可以统计出文字、数字、空格的个数。

　 静态存储一页文章，每行最多不超过80个字符，共N行；

要求：

（1）分别统计出其中英文字母数和空格数及整篇文章总字数；

（2）统计某一字符串在文章中出现的次数，并输出该次数；

（3）删除某一子串，并将后面的字符前移。-Enter a page of text, the program can count the number of words, numbers, spaces.

Static storage an article, one per line up to more than 80 characters, a total of N line

Claim:

(1) where the letters were the statistics the number of spaces and the number and total number of words throughout the article

(2) the statistical frequency of a string that appears in the article, and outputs the number of times

(3) delete a substring, and the following character forward.