程序段如下 上述程序運(yùn)行后,試回答: (1)當(dāng)(AL)=()時,程序轉(zhuǎn)向BRCH1 (2)當(dāng)(AL)=()時,程序轉(zhuǎn)向BRCH2 (3)當(dāng)(AL)=()時,程序轉(zhuǎn)向BRCH3
①(AL)=0, ②(AL)=1, ③(AL)=-1