problem using getline to insert a line in vector

[vipul mehta]

#include <iostream>
#include <string>
#include <vector>
#include <algorithm>

using namespace std;

int main()
{
vector<string> v;
string s;
int i;
int j;
int n;

cin >> n;

for( i = 0 ; i < n ; i++ ) {
getline(cin,s);
v.push_back(s);
}

return 0;
}

// above code takes n-1 strings(lines) from the user instead of n.i dont know what is wrong with the code.

[helios]

std::cin.ignore(1,'\n'); after cin >>n;.