一个简单的汇编源程序。从键盘输入两个字符串：A串，例如’software’；B串，例如’school of software engineering’； 判断A在B中是否存在，如果存在，输出“FOUND”，反之，输出“NOT FOUND” -A simple assembler source. Two strings: A string is entered from the keyboard, such as ' software' B string, for exampl