设在变量ADR为起始地址的字节存储单元中存放一组有符号数据,编写程序分别统计 1. 正数的个数 2. 负数的个数 3. 0的个数-ADR in variable byte starting address stored in a storage unit signed data, statistical programming, respectively, 1 the number of positive 2 negative number of 3.0 the number of