[C/C++]函数重载、作用域、隐藏

void print(void);


void print(int);


void print(double);


int main()




...{


void print(int);


//print(); //error，be hidden


print(1); //ok


//print(1.1); //error, be hidden




}




void print(void)...{cout<<"void"<<endl;}




void print(int)...{cout<<"int"<<endl;}




void print(double)...{cout<<"double"<<endl;}


void print(void);


void print(int);


void print(double,double d = 1.1);


int main()




...{


print(1.1); //calls printf(double,double)




}




void print(void)...{cout<<"void"<<endl;}




void print(int)...{cout<<"int"<<endl;}




void print(double d1,double d2)...{cout<<"double"<<endl<<d2;}