文件名称:copy
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子程序功能：求字符串的长度
入口参数：DS:DX存放字符串的首地址，该字符串以0为结束标志
出口参数：CX存放该字符串的长度
算法描述：用BX来指针来扫描字符串中的字符，如果遇到其结束标志，则停止扫描字符串操作 -Subroutine function: string for the length of the entrance parameters: DS: DX storing the first address of the string, the string to 0 to end the export parameter markers: CX storage algorithm the length of the string Descr iption: BX to indicators used to scan the characters string of characters, if they are signs of its end, then stop the scan string operation
入口参数：DS:DX存放字符串的首地址，该字符串以0为结束标志
出口参数：CX存放该字符串的长度
算法描述：用BX来指针来扫描字符串中的字符，如果遇到其结束标志，则停止扫描字符串操作 -Subroutine function: string for the length of the entrance parameters: DS: DX storing the first address of the string, the string to 0 to end the export parameter markers: CX storage algorithm the length of the string Descr iption: BX to indicators used to scan the characters string of characters, if they are signs of its end, then stop the scan string operation
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