cin>> not work with getline()

Question

#include 
#include 
using namespace std;

int main () {
  string str;
  int age;
  cout << \"Please enter age: \";
  cin>>a         


        

Answer 1

getline() won't work with an int, or any number for that matter. It is defined as such:

istream& getline (char* s, streamsize n );

istream& getline (char* s, streamsize n, char delim );

So, it takes in strings and char*'s; not digits.