//-----------------------------------------------------------
//
// control.cpp
//
// A program that illustrates the basic control structures in C++
//
// Simon Parsons
//
// 8th February 2010
//

//-----------------------------------------------------------
//
//  Libraries etc.

#include <iostream>
using namespace std;

//-----------------------------------------------------------
//
// main
//

int main() {

  int i, count;

  // A for loop that counts to five.

  count = 0;
  for ( i=0; i<5; i++ ) {
    count++;
  }
  cout << "for ( i=0; i<5; i++ ) ... count=" << count << endl;

  // A while loop that counts to five.

  count = 0;
  i = 0;
  while ( i<5 ) {
    count++;
    i++;
  }
  cout << "i=0; while ( i<5 ) {...i++} count=" << count << endl;

  // A do/while loop that counts to five.

  count = 0;
  i = 0;
  do {
    count++;
    i++;
  } while  ( i<5 );
  cout << "i=0; do ... i++; while ( i<5 ) ... count=" << count << endl;

  cout << endl;

  // Two for loops that increment 2 at a time

  count = 0;
  for ( i=0; i<5; i+=2 ) {
    count++;
  }
  cout << "for ( i=0; i<5; i+=2 ) ... count=" << count << endl;
  count = 0;
  for ( i=0; i>5; i+=2 ) {
    count++;
  }
  cout << "for ( i=0; i>5; i+=2 ) ... count=" << count << endl;

  cout << endl;

  // Two while loops that increment 2 at a time

  count = 0;
  i = 0;
  while ( i<5 ) {
    count++;
    i+=2;
  }
  cout << "i=0; while ( i<5 ) {...i+=2;} count=" << count << endl;

  count = 0;
  i = 0;
  while ( i>5 ) {
    count++;
    i+=2;
  }
  cout << "i=0; while ( i>5 ) {...i+=2;} count=" << count << endl;

  cout << endl;

  // Two do/while loops that increment 2 at a time

  count = 0;
  i = 0;
  do {
    count++;
    i+=2;
  } while ( i<5 );
  cout << "i=0; do ... i+=2; while ( i<5 ) count=" << count << endl;

  count = 0;
  i = 0;
  do {
    count++;
    i+=2;
  } while ( i>5 );
  cout << "i=0; do ... i+=2; while ( i>5 ) count=" << count << endl;


}

//
// End of main
//
//-----------------------------------------------------------