9 int fun(int x,int y); 不可与下列哪个函数构成重载0 A.int fun(int x,int y,int z); B.double fun(int x,int y); C.do

9 int fun(int x,int y);
不可与下列哪个函数构成重载0
A.int fun(int x,int y,int z);
B.double fun(int x,int y);
C.double fun(double x,double y);
D.double fun(int x,double y);