// ============================================
// File I/O and Self-defined Header Files (p. 12)

#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 = 0;
  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;
}






// ============================================
// File I/O and Self-defined Header Files (p. 15)

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

int main()
{
  ifstream inFile("score.txt");
  
  if(inFile)
  {
    string name;
    int score = 0;
    int sumScore = 0;
    int scoreCount = 0;

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





// ============================================
// File I/O and Self-defined Header Files (p. 22)

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

int main()
{
  ifstream inFile("test.txt");
  string name;
  char c = 0;

  if(inFile)
  {
    inFile >> name;
    c = inFile.get();
    cout << c << "-"; //  -
    c = inFile.get();
    cout << c << "-"; // 1-
  }
  inFile.close(); 
  return 0;
}





// ============================================
// File I/O and Self-defined Header Files (p. 30)

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

int main()
{
  ifstream inFile("test.txt");
  ofstream outFile("test1.txt");
  string name;
  int score;

  if(inFile && outFile)
  {
    inFile.seekg(2);
    while(inFile >> name >> score)
    {
      if(name == "Alex")
        name = "Alexander";
      outFile << name << " " << score << endl;
    }
  }
  return 0;
}





// ============================================
// File I/O and Self-defined Header Files (p. 32)

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

int main()
{
  ifstream inFile("score.txt");
  string name;
  int score = 0;
  int sumScore = 0;

  if(inFile)
  {
    while(!inFile.eof()) 
    {
      getline(inFile, name, ':');
      inFile >> score;
      sumScore += score;
    } // good!
    cout << sumScore << endl; 
  }
  inFile.close();
  
  return 0;
}





// ============================================
// File I/O and Self-defined Header Files (p. 33)

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

int main()
{
  ifstream inFile("score.txt");
  string name;
  int score = 0;
  int sumScore = 0;

  if(inFile)
  {
    while(!inFile.eof()) 
    {
      getline(inFile, name);
      inFile >> score;
      sumScore += score;
    } // bad! Why?!?!
    cout << sumScore << endl; 
  }
  inFile.close();
  
  return 0;
}





// ============================================
// File I/O and Self-defined Header Files (p. 35)

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

int main()
{
  ifstream inFile("score.txt");
  string name;
  int score = 0;
  int sumScore = 0;

  if(inFile)
  {
    while(!inFile.eof()) 
    {
      getline(inFile, name);
      inFile >> score;
      inFile.ignore();
      sumScore += score;
    } // good!
    cout << sumScore << endl; 
  }
  inFile.close();
  
  return 0;
}





// ============================================
// File I/O and Self-defined Header Files (p. 36)

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

int main()
{
  ifstream inFile("score.txt");
  string name;
  string scoreStr;
  int score = 0;
  int sumScore = 0;

  if(inFile)
  {
    while(!inFile.eof()) 
    {
      getline(inFile, name);
      getline(inFile, scoreStr);
      score = stoi(scoreStr);
      sumScore += score;
    } // good!
    cout << sumScore << endl; 
  }
  inFile.close();
  
  return 0;
}