// extract to string
#include <iostream>
#include <string>
int main ()
{
std::string name;
std::cout << "Please, enter your full name: ";
std::getline (std::cin,name);
std::cout << "Hello, " << name << "!\n";
return 0;
}//getline allows for multi word input including spaces ex. "Jim Barens"
#include <iostream>
#include <string>
int main()
{
string namePerson{}; // creating string
getline(cin, namePerson);// using getline for user input
std::cout << namePerson; // output string namePerson
}#include <bits/stdc++.h>
using namespace std;
int main()
{
#ifndef ONLINE_JUDGE
freopen("input.txt","r",stdin);
freopen("output.txt","w",stdout);
#endif
int t;
string a,b;
cin>>a;
cin.ignore(); /*must include this otherwise the cin will
have null space availabe in buffer and getline wont take
anything as input so we must clear or ignore the space
availabe in buffer due to previous input */
getline(cin,b);
cout<<a<<b;
}Make sure you didn't use cin >> str. before calling the function. If you use cin >> str and then want to use getline(cin, str), you must call cin.ignore() before.
string str;
cin >> str;
cin.ignore(); // ignores \n that cin >> str has lefted (if user pressed enter key)
getline(cin, str);