发送字符串子程序（两种方法，一种参数为发送字符串的首地址，一种参数为发送字符串的首地址和发送字符串的长度）、换行子程序、空格子程序。-Subroutine to send a string (two ways, one of the first argument is the address to send a string, a string parameter to send the address and send the first string length), wrapped sub