A.順序結(jié)構(gòu)、選擇結(jié)構(gòu)、循環(huán)結(jié)構(gòu) B.if、switch、break C.for、while、do-while D.if、for、continue
A.12,123 B.12,1234 C.12,12345 D.12,123456
A.0 B.1 C.2 D.3