c++getline

getline C++ not getting result that is required

Compiler version is 4.2 g++

#include <iostream>
#include <string>
using namespace std;
int main()
{

string a[10];
int i;
int N;
cin>>N;
for (i=0; i<N; i++)
{
    getline(cin,a[i]);
}
return 0;
}

When I input 2 . It asks for input once. When 3 then 2 times . And so on. Please solve. THANKS.

Solution

  • The first getline call reads end-of-line character that is still sitting in the input buffer after the N is read.

    Consider this as the following input:

    3 First string
Second string
Third string

    In your case, the first string is just empty.

    If you want to ignore whitespaces after the N, write something like

    cin.ignore(std::numeric_limits<std::streamsize>::max(), '\n')

    (will skip to the end of line), or

    cin >> N >> std::ws;

    (will skip all whitespace characters, end of line included).