some easy questions

[andrew rober]

well here some stuff that i didnt get
at this code

// example about structures
#include <iostream>
#include <string>
#include <sstream>
using namespace std;

struct movies_t {
  string title;
  int year;
} mine, yours;

void printmovie (movies_t movie);

int main ()
{
  string mystr;

  mine.title = "2001 A Space Odyssey";
  mine.year = 1968;

  cout << "Enter title: ";
  getline (cin,yours.title);
  cout << "Enter year: ";
  getline (cin,mystr);
  stringstream(mystr) >> yours.year;

  cout << "My favorite movie is:\n ";
  printmovie (mine);
  cout << "And yours is:\n ";
  printmovie (yours);
  return 0;
}

void printmovie (movies_t movie)
{
  cout << movie.title;
  cout << " (" << movie.year << ")\n";
}

about the part of movie.title and the parameter void printmovie (movies_t movie) how he used movie here or why :O

the second thing over here
getline (cin,mystr);
stringstream(mystr) >> yours.year;
why he used another string and then saved the string in our variable yours.year
in another words why didnt he just
getline (cin,yours.year) ? it gives error at c++
1>c:\users\xxxxxxx\documents\visual studio 2010\projects\t2\t2\t2.cpp(27): error C2784: 'std::basic_istream<_Elem,_Traits> &std::getline(std::basic_istream<_Elem,_Traits> &,std::basic_string<_Elem,_Traits,_Alloc> &)' : could not deduce template argument for 'std::basic_string<_Elem,_Traits,_Alloc> &' from 'int'
1> c:\program files (x86)\microsoft visual studio 10.0\vc\include\string(479) : see declaration of 'std::getline'
one more thing

at this code
#define N_MOVIES 3
does he define N_MOVIES 3 as array of 3 ? :O sorry i know they maybe stupid but my poor english doesnt help me to fully understand that

[zb0S216C]

This code works fine on my compiler. What line does the error refer to?

andrew rober wrote:

at this code
#define N_MOVIES 3
does he define N_MOVIES 3 as array of 3 ? (sic)

No. This is a pre-processor constant. All occurrences of N_MOVIES are replaced with the associated value, that is, number 3. This action takes place before compilation. This is a declaration of an array: int Array[3]; .

_Wazzak