// ============================================
// C/C++ Strings and File I/O (p. 6)

int array[10];
cin >> array;
return 0;

char array[10];
cin >> array;
return 0;






// ============================================
// C/C++ Strings and File I/O (p. 7)

char str[10]; 
cin >> str; // if we type "abcde"
cout << str[0]; // 'a'
cout << str[2]; // 'c¡¦






// ============================================
// C/C++ Strings and File I/O (p. 8)

int values[5] = {0};
cout << values; // an address
char array[10] = {'a', 'b', 'c'};
cout << array; // "abc"






// ============================================
// C/C++ Strings and File I/O (p. 11)

char a[100] = "abcde FGH";
cout << a << endl; // abcde FGH
char b[100] = "abcde\0 FGH";
cout << b << endl; // abcde






// ============================================
// C/C++ Strings and File I/O (p. 12)

char c[100];
cin >> c; // "123456789"
cin >> c; // "abcde";
cout << c << endl; // "abcde"
c[5] = '*';
cout << c << endl; // "abcde*789"






// ============================================
// C/C++ Strings and File I/O (p. 13)

char a[5];
cin >> a; // "123456789"
cout << a; // "123456789" or an error






// ============================================
// C/C++ Strings and File I/O (p. 14)

char a1[100];
cin >> a1; // "this is a string"
cout << a1; // "this"

char a2[100] = {'a', 'b', ' ', 'c', '\0', 'e'};
cout << a2; // ab c





// ============================================
// C/C++ Strings and File I/O (p. 15)

char a[100];
cin.getline(a, 100); // "this is a string"
cout << a << endl; // "this is a string"






// ============================================
// C/C++ Strings and File I/O (p. 36)

#include <iostream>
#include <fstream>
#include <cstdlib>
using namespace std;

int main()
{
  ofstream scoreFile("temp.txt", ios::out);
  char name[20] = {0}; 
  int score = 0;
  char notFin = true;
  bool con = true;

  if(!scoreFile)
    exit(1);
  while (con)
  {
    cin >> name >> score;
    scoreFile << name << " " << score << "\n";
    cout << "Continue (Y/N)? ";
    cin >> notFin;
    con = ((notFin == 'Y') ? true : false);  
  }
  scoreFile.close();
  return 0;
}






// ============================================
// C/C++ Strings and File I/O (p. 40)

#include <iostream>
#include <fstream>
using namespace std;

int main()
{
  ifstream inFile("score.txt");
  
  if(inFile)
  {
    char name[20] = {0};
    int score = 0;
    int sumScore = 0;
    int scoreCount = 0;

    while(inFile >> name >> score) // when does it stop?
    {
      sumScore += score;
      scoreCount++;
    }
    if(scoreCount != 0)
      cout << static_cast<double>(sumScore) / scoreCount;
    else
      cout << "no grade!";    
  }
  inFile.close();
  
  return 0;
}