下面程序的结果为 #include<iostream.h> int C; class A { private: int a; static int b; public: A() {a=0;c=0;} void seta(){a++;} voidsetb(){b++;} voidsetc(){c++;} void display() {cout << a << ' ' << b << “ ” << c;} }; int A∷b=0; void main() { A a1,a2; a1.seta(); a1.setb(); a1.setc(); a2.seta(); a2.seth(); a2.setc(); a2.display(); }