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3 . 3 V tr Class Position bi u di n v tr trong ch ng tr nh . Position c th c s d

3.3 V tr
Class Position biu din v tr trong chng trnh. Position c thc s dng lu tr
v tr ca thnh phn bn (nh v tr ca Wall, FakeWall) hoc v tr ca cc i tng di
chuyn trn bn .
Yu cu: Hin thc class Position vi cc m t sau:
Hai thuc tnh private c tn r vcu c kiu int, ln lt m t v tr theo hng v
theo ct.
Phng thc khi to Constructor (public) vi hai tham sr vc ln lt gn cho hai
thuc tnh hng v ct. Hai tham s ny c gi tr mc nh l0.
?1 Position (int r=0, int c=0);
Phng thc khi to Constructor (public) vi 1 tham s str_pos biu din mt v tr
dng chui.nh dng ca str_pos l"?1r=1,c=15(1,15)11
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