Boolean of C Program

#include 

typedef int Bool;

const Bool TRUE = 1;

const Bool FALSE = 0;

Bool even (int);

Bool odd (int);

int readPosNum();

void testOneNum();

void panic();

void main () 

{

  int i;

  char c;

  Bool more = TRUE;

  while (cin && more)

 {

    testOneNum();

    cout << "More? [y = Yes, anything else No]: ";

    cin >> c;

    if (cin) more = (c == 'y');

  }

}

void testOneNum () 

{

  int i;

  i = readPosNum();

  if (even(i)) cout << "The number " << i << " is even." << endl;

  else cout << "The number " << i << " is odd." << endl;

}

int readPosNum () 

{

  int j;

  cout << "Enter a number >= 0: ";

  cin >> j;

  while (cin && j < 0) 

{

    cout << "Unacceptable, reenter: ";cin >> j;

  }

  if (cin) return(j);

  else panic();

}

Bool even (int i)

 {

  if (i == 0) return(TRUE);

  else return(odd(i-1));

}

Bool odd (int i) 

{

  if (i == 0) return(FALSE);

  else return(even(i-1));

}

void panic() 

{

  cout << "Disaster! Exiting ..." << endl;

  exit(-1);

}

While in C Program

#include 

#include 

int exp (int,int);

void readnums (int&, int&);

void main ()

 {

  int b, e;

  readnums(b,e);

  cout << b << " to the " << e << " = " << exp(b,e) << endl;

}

void readnums (int& b, int& e) 

{

  int correctInput;

  cout << "Enter the base and the exponent: ";

  cin >> b >> e;

  if (!cin) 

{ 

    cout << "Disaster! Terminating program." << endl;

    exit(-1);

  }

  correctInput = (b >= 0) && (e >= 0);

  while (!correctInput)

 {

    cout << "Something wrong! Try again ..." << endl;

    cout << "Re-enter base and exponent: ";

    cin >> b >> e;

    if (!cin) 

{ 

      cout << "Disaster! Terminating program." << endl;

      exit(-1);

    }

    correctInput = (b >= 0) && (e >= 0);

  }

}

int exp (int b, int e) 

{

  int result;

  result = 1;

  while (e != 0) 

{

    result = result * b;

    e = e - 1;

  }

  return(result);

}

Initial of C Programs

#include 

void main () 

{

  int i;

  i=1;

  cout << "Initial value of i = " << i << ". The value of ++i is " << ++i<<". Now i = " << i << endl;

  i=1;

  cout << "Initial value of i = " << i 

    << ". The value of i++ is " << i++ 

      << ". Now i = " << i << endl;

}

Sum of the Degits on c pgm

#include 

int f1 (int, int, int);

int f2 (int&, int&, int&);

int f3 (int, int&, int);

void main ()

 {

  int i, j, k;

  i=1;

  j=2;

  k=3;

  cout << endl;

  cout << "Initial values of i, j, and k are: " 

    << i << ", " << j << ", and " << k << endl << endl;

  cout << "f1(i,j,k) = " << f1(i,j,k) << endl;

  cout << "Values of i, j, and k after the call to f1 are: " 

    << i << ", " << j << ", and " << k << endl << endl;

  cout << "f2(i,j,k) = " << f2(i,j,k) << endl;

  cout << "Values of i, j, and k after the call to f2 are: " 

    << i << ", " << j << ", and " << k << endl << endl;

  cout << "f3(i,j,k) = " << f3(i,j,k) << endl;

  cout << "Values of i, j, and k after the call to f3 are: " 

    << i << ", " << j << ", and " << k << endl;

}

int f1 (int x, int y, int z)

{

  x=x+5;

  y=y+5;

  z=z+5;

  return(x+y+z);

}

int f2 (int& x, int& y, int& z)

 {

  x=x+5;

  y=y+5;

  z=z+5;

  return(x+y+z);

}

int f3 (int x, int& y, int z) 

{

  x=x+5;

  y=y+5;

  z=z+5;

  return(x+y+z);

}