A.代碼段1B.代碼段2C.代碼段1和代碼段2都會被編譯D.代碼段1和代碼段2都不會被編譯
A.int x =fun(5,0);B.int x =fun();C.int y =fun(0);D.int y =fun(5);
A.void fun1(double x,double y,int z){......}B.void fun2(double x,double y){......}C.int fun1(int x,double y){......}D.double fun2(int x,int y){......}