C ++ string read getline function

Official 
description: ( . 1 )     
the istream & getline (the istream & IS , String & STR, char the delim); 
the istream & getline (the istream && IS , String & STR, char the delim); 
( 2 )     
the istream & getline (the istream & IS , String & STR); 
the istream & getline (the istream && IS , String & str); 

Get string from the stream line 
extracted from the character and is stored into str they until you find the delim separator character (or line feed, ( 2 ) the default ' \ n- ' ). 

IS: 
istream object from which characters are extracted.
str：
string object where the extracted line is stored.
The contents in the string before the call (if any) are discarded and replaced by the extracted line.

E.g:

A first input line n, line n representative of the next input character string (character string of each line may contain spaces)

3 
'aa' aa 
in bbb 
CCC

#include <the iostream> 
#include <Vector>
 the using  namespace STD; 

int main () 
{ 
    Vector < String > VEC;
     int n-; 
    CIN >> n-; 
    . CIN GET (); // Since the carriage after the input of n, using this sentence eaten carriage return, or the following getline () Get the first string is '\ n-' 

    the while (N-- ) 
    { 
        string S; 
        getline (CIN, S); // defaults to a carriage, In terms of other symbols as delimiters, to getline (cin, s, ', '), e.g. comma 
        vec.push_back (S);        
    } 
    COUT << " Result: " <<endl;
    for(int i=0; i<vec.size(); ++i)
    {
        cout << vec.at(i) << endl;
    }

    system("pause");
    return 0;
}

 

Without cin.getr () to '\ n' eaten, the following occurs:

Will not be entered twice in the input, the output of the first row is blank (only a carriage return symbol, the display is blank)