complexType
3280 ワード
//decltype ,
decltype((variable)) ruiy; // ( , , ) ,
decltype((i)) d; //d int&
;
decltype((varuable)) ,decltype(variable) variable ;
decltype auto :
decltype ;
auto ;
ISBN
if(data1.bookNo == data2.bookNo)
{
unsigned totalCnt = data1.units_sold + data2.units_sold;//
double totalRevenue = data1.revenue + data2.revenue;
// ISBN, , ,
std::cout << data1.bookNo << " " << totalCnt
<
header guard
* , , ,
& operator
undefined ,
string vector
string vector
,
string
vector string vector string vector
string
vector
string vector
string vector
,
string
vector
,
using , std,
:: :
std::cin std cin
using namespace::Name;
using namespace std;//
,
,
string s1;
string s2 = s1;
string s3 = "ruiy";// s3
string s4(10,'c');
string
string
= , (copy initialization) , (direct initialization)
,
getline
getline >>
getline string
getline
getline string
string
string ,string getline
string cin
getline( ,string ) over, \ n
getline
getline
getline( ,string object); cin
getline(cin,string line)
cin string line , string line ;
if
string