1、string读取某一行，然后按空格分隔吹每一个stringintmain(){stringline,b;getline(cin,line);stringstreamss(line);while(ssb){cout<<

unionDATE{chara;inti5;doubleb;};DATEmax;cout<<sizeof(max)<<endl;这个问题很好回答，并且我把这个问题归结于基本概念题（就是入门书必须介绍的）。我想一般来

方法1：chardata2{0x0A,0x0B};charresult8;for(inti0;i<2;i){sprintf(result,"%X",datai);//%X结果为大写，%x结果为小写cout<<"result"<<resulti<<endl

std::terminate(); set_terminate，产生异常会调用该函数，默认是调用abortvoidhandler(){cout<<"error~~~~~~~~~~~~~~~~~~";}std::set_terminate(handler);//默认调用

直接用代码说明问题：include<iostreamusingnamespacestd;classA{public:A(inta0):_a(a){cout<<"ConstructorA!"<<_a<<endl;}~A(){cout

include  //include位置：/usr/includeincludeusingnamespacestd;intmain(){cout<<"HelloWorld"<     return0;}gotesttest.cpp//用ggcc编译会出

include<iostreamclasscx{public:virtualvoidfunc(){std::cout<<"func"<<std::endl;}cx(){func();//构

着手C的第一个代码includeusingnamespacestd;intmain(void)cout<<"helloworld"<<endl;return0;AI写代码cpp运行一、第一行include是包含头文件，头文件的名字叫iostream，以

1.缺省//全缺省voidFunc1(inta10,intb20,intc30)cout<<"a"<<a<<endl;cout<<"b"<<b<<endl;cout<<"c"<<c<<endl;//半缺省voidFunc2(inta,intb,intc)c