// File name: math.cpp
// Author: Josh Kilhoffer
// Email address: [email]Dariklar@hotmail.com[/email]
// Description: simple math program.
// Last changed: September 2nd, 2003 5:01PM central

#include <iostream>
using namespace std;

int main()
{
     double first_number, second_number, sum, product, difference, divisor;
	 char A, B, C, D, response;
	     cout.setf(ios::fixed);
		 cout.setf(ios::showpoint);
		 cout.precision(3);

     cout << "What would you like to do?\n";
	 cout << "Would you like to: (A) Add two numbers, (B) Subtract two numbers,\n";
	 cout << " (C) Multiply two numbers, or (D) Divide two numbers?\n";
	 cout << "When entering your answer, please be sure to capitalize the letter.\n";
	 cin >> response;
	 if response = A;
	 {

		 cout << "What are your two numbers?\n";
		 cin >> first_number;
	     cin >> second_number;
		 sum = first_number + second_number;
		 cout << "The sum of those two numbers is " << sum << endl;
	 }
	 if response = B;
	 {
		 cout << "What are your two numbers?\n";
		 cin >> first_number;
		 cin >> second_number;
		 difference = first_number - second_number;
		 cout << "The difference between those two numbers is " << difference << endl;
	 }
	 if response = C;
	 {
		 cout << "What are your two numbers?\n";
	     cin >> first_number;
		 cin >> second_number;
		 product = static_cast<double>(first_number) * (second_number);
		 cout << "The product of those two numbers is " << product << endl;
	 }
	 if response = D;
	 {
		 cout << "What are your two numbers?\n";
		 cin >> first_number;
		 cin >> second_number;
		 divisor = static_cast<double>(first_number)/(second_number);
		 cout << "The first number goes into the second number " << divisor << " times\n";
	 }
     return 0;
}

--------------------Configuration: math - Win32 Debug--------------------
Compiling...
math.cpp
C:\Programs\math.cpp(18) : error C2061: syntax error : identifier 'response'
C:\Programs\math.cpp(27) : error C2061: syntax error : identifier 'response'
C:\Programs\math.cpp(35) : error C2061: syntax error : identifier 'response'
C:\Programs\math.cpp(43) : error C2061: syntax error : identifier 'response'
Error executing cl.exe.

math.obj - 4 error(s), 0 warning(s)

// File name: math.cpp
// Author: Josh Kilhoffer
// Email address: [email]Dariklar@hotmail.com[/email]
// Description: simple math program.
// Last changed: September 2nd, 2003 7:49PM central

#include <iostream>
using namespace std;

int main()
{
     double first_number, second_number, sum, product, difference, divisor;
	 char A, B, C, D, response;
	 A = 'A';
	 B = 'B';
	 C = 'C';
	 D = 'D';

	     cout.setf(ios::fixed);
		 cout.setf(ios::showpoint);
		 cout.precision(3);

     cout << "What would you like to do?\n";
	 cout << "Would you like to: (A) Add two numbers, (B) Subtract two numbers,\n";
	 cout << " (C) Multiply two numbers, or (D) Divide two numbers?\n";
	 cout << "When entering your answer, please be sure to capitalize the letter.\n";
	 cin >> response;
	 cout << "You typed in a " << response << endl;
	 if (response == A)
	 {

		 cout << "What are your two numbers?\n";
		 cin >> first_number;
	     cin >> second_number;
		 sum = first_number + second_number;
		 cout << "The sum of those two numbers is " << sum << endl;
	 }
	 if (response == B)
	 {
		 cout << "What are your two numbers?\n";
		 cin >> first_number;
		 cin >> second_number;
		 difference = first_number - second_number;
		 cout << "The difference between those two numbers is " << difference << endl;
	 }
	 if (response == C)
	 {
		 cout << "What are your two numbers?\n";
	     cin >> first_number;
		 cin >> second_number;
		 product = static_cast<double>(first_number) * (second_number);
		 cout << "The product of those two numbers is " << product << endl;
	 }
	 if (response == D)
	 {
		 cout << "What are your two numbers?\n";
		 cin >> first_number;
		 cin >> second_number;
		 divisor = static_cast<double>(first_number)/(second_number);
		 cout << "The first number goes into the second number " << divisor << " times\n";
	 }
     return 0;
}

// File name: math.cpp
// Author: Josh Kilhoffer
// Email address: [email]Dariklar@hotmail.com[/email]
// Description: simple calculator.
// Last changed: September 3rd, 2003 12:55PM central



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

int main()
{
   int sum, product, difference, divisor, first_number, second_number, sqrt1;
   double remainder;
   char response;
   cout.setf(ios::fixed);            // magic formula to
   cout.setf(ios::showpoint);        // sets number of decimals
   cout.precision(1);
   cout << "What would you like to do?\n";
   cout << "Would you like to: (A) Add two numbers, (B) Subtract two numbers,\n";
   cout << "(C) Multiply two numbers, (D) Divide two numbers, or\n";
   cout << "(E) Take the square root of a number?\n";
   cin >> response;
   if ((response == 'A') || (response == 'a'))
   {
       cout << "What are your two numbers?\n";
	   cout << "First number: ";
       cin >> first_number;
	   cout << "and you want " << first_number << "added to what number? ";
	   cin >> second_number;
       sum = static_cast<double>(first_number) + (second_number);
       cout << "The sum of those two numbers is " << sum << ".\n";
   }
   if ((response == 'B') || (response == 'b'))
   {
       cout << "What are your two numbers?\n";
	   cout << "First number: ";
       cin >> first_number;
	   cout << "and you want to subtract what number from " << first_number << "?\n";
       cin >> second_number;
       difference = static_cast<double>(first_number) - (second_number);
       cout << "The difference between those two numbers is " << difference << ".\n";
   }
   if ((response == 'C') || (response == 'c'))
   {
       cout << "What are your two numbers?\n";
	   cout << "First number: ";
       cin >> first_number;
	   cout << "and you want to multiply " << first_number << "by what? ";
       cin >> second_number;
       product = static_cast<double>(first_number) * (second_number);
	   cout << "The product of those two numbers is " << product << ".\n";
   }
   
   if ((response == 'D') || (response == 'd'))
   {
       cout << "What are your two numbers?\n";
	   cout << "First number: ";
       cin >> first_number;
	   cout << "and you want to divide " << first_number << " by what?";
       cin >> second_number;
       divisor = static_cast<double>(first_number)/(second_number);
	   remainder = first_number%second_number;
       cout << "The second number goes into the first number " << divisor << " times with";
	   cout << "the remainder " << remainder << endl;
   }
   if ((response == 'E') || (response == 'e'))
   {
	   cout << "What number would you like to take the square root of?\n";
	   cin >> first_number;
	   sqrt1 = sqrt(first_number);
	   cout << "The square root of that number is " << sqrt1 << ".\n";
   }
     return 0;
}

int first_number, sqrt1;

if ((response == 'E') || (response == 'e'))
   {
     cout << "What number would you like to take the square root of?\n";
     cin >> first_number;
     sqrt1 = sqrt(first_number);
     cout << "The square root of that number is " << sqrt1 << ".\n";
   }

#include <iostream>
using namespace std;

int main()
{
	int score1(0), score2(0), pl1choice, pl2choice, secretNum, dist1, dist2, round(0);

    cout << "This is a game that will allow two players to play a guessing game.\n";
	cout << "The goal of the game is to pick a number between 1 and 10 and be \n";
	cout << "the closest to a \"secret number \" picked at random by the computer.\n";
	cout << "Each time a player is the closest, they win a point. The game continues\n";
	cout << "until 1 of the players has 3 points.\n";

	do
	{

    cout << "\nFirst player, please enter your guess.\n";
	cin >> pl1choice;
	cout << "Second player, please enter your guess.\n";
	cin >> pl2choice;
	secretNum = (rand() % 10) +1;
	dist1 = abs(pl1choice - secretNum);
	dist2 = abs(pl2choice - secretNum);
	if (dist1 < dist2)
	{
		score1++;
	cout << "First player gets the point this time!\n\n";
	cout << "You were " << dist1 << " away from the secret number!\n\n";
	cout << "The secret number was " << secretNum << "\n\n";
	}
	if (dist2 < dist1)
	{	
		score2++;
	cout << "Second player gets the point this time!\n\n";
	cout << "You were " << dist2 << " away from the secret number!\n\n";
	cout << "The secret number was " << secretNum << "\n\n";
	}
	if (dist2 == dist1)
	{
		cout << "Tie this time, no one receives a point!\n";
		cout << "The secret number was " << secretNum << "\n\n";
	}
    round++;
	cout << "First player has " << score1 << "points.\n\n";
	cout << "Second player has " << score2 << "points.\n\n";
	cout << "This is round " << round << "!\n\n";
	} while ((score1 < 3) && (score2 < 3));
		if (score1 > score2)
			cout << "Congratulations player one on winning!\n\n";
		else
			cout << "Congratulations player two on winning!\n\n";
		return 0;
}

// Created by Josh Kilhoffer
// A guessing game
// Last changed: September 10th, 2003

#include <iostream>
#include <cstdlib>
#include <ctime>

using namespace std;

int main()
{
  int score1(0), score2(0), pl1choice, pl2choice, secretNum, dist1, dist2, round(0), points;
  char response;
  srand (time(0));
  cout << "This is a game that will allow two players to play a guessing game.\n";
  cout << "The goal of the game is to pick a number between 1 and 10 and be \n";
  cout << "the closest to a \"secret number \" picked at random by the computer.\n";
  cout << "Each time a player is the closest, they win a point. The game continues\n";
  cout << "until 1 of the players has 3 points.\n";
  cout << "How many points would you like to play to?\n";
  cin >> points;

  do
  {

  cout << "\nFirst player, please enter your guess.\n";
  cin >> pl1choice;
  cout << "Second player, please enter your guess.\n";
  cin >> pl2choice;
here3:
    if ((pl1choice >= 11) || (pl1choice < 1))
		goto here1;
	if ((pl2choice >= 11) || (pl2choice < 1))
		goto here2;


  secretNum = (rand() % 10) +1;
  dist1 = abs(pl1choice - secretNum);
  dist2 = abs(pl2choice - secretNum);
  if (dist1 < dist2)
  {
    score1++;
  cout << "First player gets the point this time!\n\n";
  cout << "You were " << dist1 << " away from the secret number!\n\n";
  cout << "The secret number was " << secretNum << "\n\n";
  }
  if (dist2 < dist1)
  {  
    score2++;
  cout << "Second player gets the point this time!\n\n";
  cout << "You were " << dist2 << " away from the secret number!\n\n";
  cout << "The secret number was " << secretNum << "\n\n";
  }
  if (dist2 == dist1)
  {
    cout << "Tie this time, no one receives a point!\n";
    cout << "The secret number was " << secretNum << "\n\n";
  }
    round++;
  cout << "First player has " << score1 << "points.\n\n";
  cout << "Second player has " << score2 << "points.\n\n";
  cout << "This is round " << round << "!\n\n";
  cout << "Press any key to go to the next round.\n";
  cin >> response;
  system("cls");

  } while ((score1 < points) && (score2 < points));

    if (score1 > score2)
      cout << "Congratulations player one on winning!\n\n";
    else
      cout << "Congratulations player two on winning!\n\n";
   goto end;

here1:
	{
	cout << "First player, your choice was invalid...please enter your choice again.\n";
		cin >> pl1choice;
	goto here3;
	}
here2:
	{
		cout << "Second player, your choice was invalid...please enter your choice again.\n";
		cin >> pl2choice;
		goto here3;
	}
end:

    return 0;
}