Return Statement of c pgm

#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;  

}