您的位置：首页 > 其它

求高手解答类中各种sizeof问题

2012-10-09 21:43 316 查看 
#include<iostream>
usingnamespacestd;
 
classa{virtualvoidf(){}doubleav;intab;
//virtualvoidf1(){}
};
classb{//intaa;intaad;
//virtualvoidf1(){}
};
classc{//intaad
;};
classd{intaad;
};
classe:publicvirtuala//,publicvirtualbublicvirtualc,publicvirtuald
{};
voidmain()
{cout<<sizeof(e)<<endl;}
输出是32；





 

#include<iostream>
usingnamespacestd;
classa{virtualvoidf(){}doubleav;intab;
//virtualvoidf1(){}
};
classb{//intaa;intaad;
//virtualvoidf1(){}
};
classc{//intaad
;};
classd{intaad;
};
classe:publicvirtuala,publicvirtualb,publicvirtualc//,publicvirtuald
{};
voidmain()
{cout<<sizeof(e)<<endl;}
输出是 36；






 

#include<iostream>
usingnamespacestd;
classa{virtualvoidf(){}doubleav;intab;
//virtualvoidf1(){}
};
classb{//intaa;intaad;
virtualvoidf1(){}
};
classc{//intaad
;};
classd{intaad;
};
classe:publicvirtuala,publicvirtualb,publicvirtualc//,publicvirtuald
{};
voidmain()
{cout<<sizeof(e)<<endl;}
输出是36；






 

#include<iostream>
usingnamespacestd;
classa{virtualvoidf(){}doubleav;intab;
//virtualvoidf1(){}
};
classb{intaa;intaad;
virtualvoidf1(){}
};
classc{//intaad
;};
classd{intaad;
};
classe:publicvirtuala,publicvirtualb,publicvirtualc//,publicvirtuald
{};
voidmain()
{cout<<sizeof(e)<<endl;}
输出是44；





 

#include<iostream>
usingnamespacestd;
classa{virtualvoidf(){}doubleav;intab;
//virtualvoidf1(){}
};
classb{intaa;intaad;
virtualvoidf1(){}
};
classc{//intaad;
virtualvoidf2(){}
};
classd{//intaad;
};
classe:publicvirtuala,publicvirtualb,publicvirtualc,publicvirtuald
{};
voidmain()
{cout<<sizeof(e)<<endl;}
输出是48；





                                            

                                        

                        
                        内容来自用户分享和网络整理，不保证内容的准确性，如有侵权内容，可联系管理员处理 点击这里给我发消息 
                    

                    

                    

                        

                         标签： 
                                                class
                                                c
                                                

                        

                    


                

            


            

                
相关文章推荐

                

                
            

        

        

            

            
            

                

                    
新的分享

                    

                        
                    

                

            


            

                

                    
章节导航