Using `getline(cin, s);` after using `cin >> n;`

Question

int n;
std::cin >> n;

std::string s = \"\";
std::getline(cin, s);

I noticed that if I use cin, my program would hang the next t

Answer 1

std::cin leaves an extraneous \n in the input stream. When you use std::getline(), you are retrieving that \n.

Although @WilliamLannen's answer works if you really need std::cin, you are better off using this method:

int n;
std::string sn;
std::stringstream ssn;

std::getline(std::cin, sn);
ssn << sn;
ssn >> n;

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References

http://www.daniweb.com/software-development/cpp/tutorials/71858