Grade Program in C++

Grade1

#include 

#include

#include 

typedef int bool;

const bool true = 1;

const bool false = 0;

char printablebool (bool i) 

{

  if (i==false) 

    return 'f';

  else return 't';

}

int main () 

{

  ifstream f1, f2, f3check;

  ofstream f3;

  f1.open("exam");

  if (!f1) 

  {

    cout << "Cannot open file exam" << endl;

    return 1;

  }

  f2.open("key");

  if (!f2) 

   {

    cout << "Cannot open file key" << endl;

    return 1;

  }

  f3check.open("result");

  if (f3check) 

  {

    cout << "File result already exists" << endl;

    return 1;

  }

  f3.open("result");

  if (!f3) 

  {

    cout << "Cannot open file result" << endl;

    return 1;

  }

  int runningSum;

  int ans, key, score;

  runningSum = 0;

  f1 >> ans;

  if (!f1)

  {

    cout << "Error reading from file exam" << endl;

    return 1;

  }

  f2 >> key; 

  if (!f1) 

  {

    cout << "Error reading from file key" << endl;

    return 1;

  }

  if (ans == key)

 {

    runningSum = runningSum + 25;

    score = true;

  }

  else score = false;

  f3 << printablebool(score) << endl;

  if (!f3) 

  {

    cout << "Error writing to file result" << endl;

    return 1;

  }

  f1 >> ans;

  if (!f1) 

  {

    cout << "Error reading from file exam" << endl;

    return 1;

  }

  f2 >> key; 

  if (!f1) 

  {

    cout << "Error reading from file key" << endl;

    return 1;

  }

  if (ans == key) 

  {

    runningSum = runningSum + 25;

    score = true;

  }

  else score = false;

  f3 << printablebool(score) << endl;

  if (!f3) 

  {

    cout << "Error writing to file result" << endl;

    return 1;

  }

  f1 >> ans;

  if (!f1) 

  {

    cout << "Error reading from file exam" << endl;

    return 1;

  }

  f2 >> key; 

  if (!f1) 

  {

    cout << "Error reading from file key" << endl;

    return 1;

  }

  if (ans == key)

   {

    runningSum = runningSum + 25;

    score = true;

  }

  else score = false;

  f3 << printablebool(score) << endl;

  if (!f3) 

 {

    cout << "Error writing to file result" << endl;

    return 1;

  }

  f1 >> ans;

  if (!f1) 

 {

    cout << "Error reading from file exam" << endl;

    return 1;

  }

  f2 >> key; 

  if (!f1) 

 {

    cout << "Error reading from file key" << endl;

    return 1;

  }

  if (ans == key) 

  {

    runningSum = runningSum + 25;

    score = true;

  }

  else score = false;

  f3 << printablebool(score) << endl;

  if (!f3) {

    cout << "Error writing to file result" << endl;

    return 1;

  }

  f3 << endl << runningSum << endl;  

 }

 Grade2

#include 

#include 

typedef int bool;

const bool true = 1;

const bool false = 0;

char printablebool (bool i) 

{

  if (i==false) 

  {

    return 'F';

  }

  else 

  {

    return 'T';

  }

}

int main () 

 {

           ifstream f1, f2; 

  ofstream f3;

  f1.open("exam");

  f2.open("key");

  f3.open("result");

  int runningSum;

  int ans, key, score;

  runningSum = 0;

  f1 >> ans;

  f2 >> key;

  while (f1) 

 {

    if (ans == key) 

    {

      runningSum = runningSum + 25;

      score = true;

    }

    else 

   {

      score = false;

    }

    f3 << printablebool (score) << endl;

    f1 >> ans;

    f2 >> key;

  }

  f3 << endl << runningSum << endl;  

}