下面这个程序的结果是 #include＜iostream.h＞ class A { private: int a public: void seta( ) int geta( ) } void A: :seta( ) { a＝1} int A: :geta( ) { retum a} class B { private: int a public: void seta( ) int geta( ) } void B: :seta( ) {a＝2} int B: :geta( ) {return a} class C: public A，public B { private: int b public: void display( ) } void C: :display( ) { int b＝geta( ) cout ＜ ＜ b} void main( ) { C c c. seta( ) c. display( ) }