[C++] getline(istream,string)

#include<iostream>
#include<cstdlib>
#include<string>
#include<cstring>
using namespace std;

int main()
{
 string s;
 char a[100];
 
 //std::istream::getline(char*,int) for char*
 cin.getline(a,100);
 cout<<a<<endl;
 
 //std::getline(istream&,string) for string
 getline(cin,s);
 cout<<s;
 return 0;
}