指針釋放出現(xiàn)問(wèn)題，計(jì)算面積的方法沒(méi)有被調(diào)用
deleting object of polymorphic class type 'shape' which has non-virtual destructor might cause undefined behavior [-Wdelete-non-virtual-dtor]
shape?*p1?=?new?circle(3.2); shape?*p2?=?new?rect(4.6,5.2); p1->jsmj(); p2->jsmj(); delete?p1 p1?=?NULL; delete?p2; p2?=?NULL; return?0;
2019-10-12
就是叫你在shape類(lèi)定義一個(gè)虛析構(gòu)函數(shù)，不然rect和circle的析構(gòu)函數(shù)不會(huì)執(zhí)行
2019-10-07
能發(fā)完么，這么點(diǎn)代碼，并不能看出問(wèn)題