说明：   查找匹配字符串 程序接收用户键入的一个关键字以及一个句子.如果句子中不包含关键字则显示 NO PATH 如果句子中包含关键字则显示从这该字在句子的位置用十六进制数显示出来
(search procedures to receive matching string typing a keyword and a sentence. If the sentence does not contain the keyword showed NO PATH if the sentence contains the keyword showed from the word sentence in the position to use hexadecimal few displayed )