Need help making a program

teh0ni0n · #1 08-Jul-2004, 00:21

Heres a descripton of what I need help making, It will be a console C++ program

" A deck of cards has 4 suits and 13 values in each suit. It contains 52 cards. The program needs to display the value and suit given a number. Hint: A suit is <value> % 4 where 0 is Hearts, 1 is Spades, 2 is Diamonds and 3 is Clubs. Use argc and argv in this program. "

I really have no idea how to do something like this, i'm just a noob! Anybody help?

sho · #2 08-Jul-2004, 00:49

you should read a little to do it... its easier than you think...

here are some hints:

CPP / C++ / C Code:

// here is your main function with the arguments you need to use:
void main(int argc, char *argv[]) {
    // put here your code
}

1) the variable argv[] has a value or more
2) you take its value(s) and perform a modulo operation with 4 (var % 4)
3) if the result is 0 the suit is Hearts, if is 1 is Spades, 2 is Diamonds and 3 is Clubs
4) so use a conditional operator to do one thing or other depending on that
5) also depending on that you should peform some operation to the value(s) to find the value of the card being represented

hope this helps...

teh0ni0n · #3 08-Jul-2004, 01:08

Quote:

Originally Posted by sho

you should read a little to do it... its easier than you think...

here are some hints:

CPP / C++ / C Code:

// here is your main function with the arguments you need to use:
void main(int argc, char *argv[]) {
    // put here your code
}

1) the variable argv[] has a value or more
2) you take its value(s) and perform a modulo operation with 4 (var % 4)
3) if the result is 0 the suit is Hearts, if is 1 is Spades, 2 is Diamonds and 3 is Clubs
4) so use a conditional operator to do one thing or other depending on that
5) also depending on that you should peform some operation to the value(s) to find the value of the card being represented

hope this helps...

CPP / C++ / C Code:

// Cards.cpp 
//
#include "stdafx.h";
#include <iostream>
using namespace std;

int main(int argc, char* argv[])
{
	int number;
	int suit;

	cout << "Please tell me a number"<<endl;
	cin >> number;
	suit  = (number % 4);
	cout << "The Suit is ";

	if (0 == suit)
		cout << "Hearts"<<endl;

	if (1 == suit)
		cout << "Spades"<<endl;

	if (2 == suit)
		cout << "Diamonds"<<endl;

	if (3 == suit)
		cout << "Clubs"<<endl;



	return 0;
}

Thats what I have right now, But I'm having trouble figuring out the value, like king queen jack 10 etc because i dont play cards! Any ideas?

teh0ni0n · #4 08-Jul-2004, 01:14

Quote:

Originally Posted by teh0ni0n

Thats what I have right now, But I'm having trouble figuring out the value, like king queen jack 10 etc because i dont play cards! Any ideas?

CPP / C++ / C Code:


// Cards.cpp 
//
#include "stdafx.h";
#include <iostream>
using namespace std;

int main(int argc, char* argv[])
{
	int number;
	int suit;
	int value;

	cout << "Please tell me a number"<<endl;
	cin >> number;
	suit  = (number % 4);
	cout << "The Suit is ";

	if (0 == suit)
		cout << "Hearts"<<endl;

	if (1 == suit)
		cout << "Spades"<<endl;

	if (2 == suit)
		cout << "Diamonds"<<endl;

	if (3 == suit)
		cout << "Clubs"<<endl;
	
	cout << "And the value is ";
	value = (suit % 13);

	if (0 == value)
	cout << "King"<<endl;


	return 0;
}

I figured out how to find the value, you can see i'll just add 12 more ifs at the end, But I have no idea what names match what values!! Like what value is king etc!

sho · #5 08-Jul-2004, 03:12

oh so the main problem was actually a cards problem

card numbers go from 1 to 13...
1 is the as
2 to 10 are numbers
11 is jack
12 is queen
13 is king

just some advice in your code:

CPP / C++ / C Code:

// Cards.cpp 
//
#include "stdafx.h";
#include <iostream>
using namespace std;

int main(int argc, char* argv[])
{
	// the problem says to use argc and argv to get the number so:
	int number = argv[0]; // but argv can contain more than one number so check it out with argc
	int suit;
	int value;

	// the next isnt needed since the number will be extracted from argv
	// cout << "Please tell me a number"<<endl;
	// cin >> number;
	suit  = (number % 4);
	cout << "The Suit is ";

	if (0 == suit)
		cout << "Hearts"<<endl;

	if (1 == suit)
		cout << "Spades"<<endl;

	if (2 == suit)
		cout << "Diamonds"<<endl;

	if (3 == suit)
		cout << "Clubs"<<endl;
	
	cout << "And the value is ";

	// i think from what the problem says that the number will be
	// a number between 0 and 52
	// multiples of 4: hearts.. numbers with %4 == 1: spades.. and so on
	// so 4,8,12,16...52 are hearts... being 4 the value 1 of hearts...
	// number 52 is the value 13 of hearts... and so on
	// and thats how you can do it
	value = (suit % 13);

	if (0 == value)
	cout << "King"<<endl;

	return 0;
}

WaltP · #6 08-Jul-2004, 22:04

Build and run this program with different parameters at the console. It should give you an idea how to deal with the command line:

CPP / C++ / C Code:

#include <stdio.h>

int main (int argc, char *argv[])
{
    int p;    // parameter loop

    printf("%d arguments \n", argc);  // number of parameters on cmd line
    for (p=0; p<argc; p++)
    {
        printf("%02d) %s \n", p, argv[p]);
    }
    return 0;
}

Remember, all parameters are char*, even if using C++. So if you enter a number you'll have to convert it from the char string to an integer.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Rate This Thread
Rate This Thread:

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Need help with a C program (Long)	McFury	C Programming Language	3	29-Apr-2004 21:06
Modify a C program	ayoub	C Programming Language	3	15-Mar-2004 12:34
error during program	rjd72285	C++ Forum	0	11-Nov-2003 19:49
one program access another?	dgoulston	C++ Forum	1	07-Oct-2003 12:26

Need help making a program

just a little help