i'm learning C++ from programming principles and practice. There they have given sample program:
// read and write a first name
#include "std_lib_facilities.h"
int main()
{
cout << "Please enter your first name (followed by 'enter'):\n";
string first_name; // first_name is a variable of type string
cin >> first_name; // read characters into first_name
cout << "Hello, " << first_name << "!\n";
}
When types same in visual studio, it gives error for header file. I'm confused with this header file. Is it still used? what else i can use instead of this and what header files do programmer use?
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