A.******......,持續(xù)顯示星號B.*C.***D.**
A.int fun(int x){......}B.extern int fun(int x){......}C.void fun(int x){......}D.static int fun(int x){......}
A.int fun(int x,double y=0){......}B.int fun(int x=0,double y=1.5){......}C.int fun(int x=0,double y){......}D.int fun(int x=0,double y=0){......}