C++ :: Card Rand And Suit - Adding Dynamic Arrays

May 1, 2013

I'm writing a program with two classes, one that contains a card's rank and suit and the other contains pile of these cards. I'm having trouble when it comes to adding a pile to another pile...here's what I have so far:

class Card //Card class declaration
{
private:
int rank; //invoking rank
char suit; //invoking suit
public:
void setCard(int r,char s); //determines card suit/rank

[Code] ....

I understand that I'm calling my pile arrays incorrectly, but I'm not sure why.

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C++ :: Function To Randomly Determines Suit And Value Of A Card

Jul 19, 2013

I'm writing a card game and I'm having trouble getting the first part of it right, which is picking out a random card from the deck and displaying it to screen. So it's supposed to display a different card every time i run the function in the program. The problem is, I keep getting the same output every time "Nine of Hearts".

This is what I have so far,

#include <iostream>
using namespace std;
//declare two string arrays
//one holds the "suit" of the cards, the other hold the "value"
string suit[] = {"Diamonds", "Hearts", "Spades", "Clubs"};
string faceValue[] = {"Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine", "Ace", "King", "Queen", "Jack"};

[Code] ......

This is the output I keep getting every time I run the program:

Nine of Hearts

This "random selection" function I'm trying to do is meant to work as a means of shuffling the cards in the beginning of every round in the game and displaying only the top card from the deck.

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C :: War Card Game With Linked Lists And Dynamic Memory

Apr 23, 2013

I am struggling to finish up my game of War. There are a few problems I have ran in to. My shuffle function seems to work fine. I believe my problem lies within my game rules. When I run my code, the game usually plays all the way through but almost always ends in 'War'. I am struggling to get the game to restart after running once. I am not sure how to clear the list and start over.

Code:
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <time.h>
#include <Windows.h>

[Code] ....

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C++ :: Fill Value Of Dynamic Array Of Dynamic Arrays?

Jan 4, 2013

I'm writing a program in which I have to use a matrix to represent a file in code. because it's a file, the size of the matrix is undefined, and therefore the matrix has to be dynamic. I found out that my compiler doesn't like dynamic multidimensional arrays, so I was thinking of this matrix as a dynamic (monodimensional) array of other dynamic (monodimensional) arrays. My program (and thus this example) uses unsigned chars.

unsigned char variable=something;
unsigned char**matrix=new unsigned char*[lenghtOfMainArray];
for(int rowNumber=0;rowNumber<lenghtOfArray;rowNumber++)
{

[Code].....

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C++ :: Adding Two Arrays?

Feb 7, 2012

I need to input values for two arrays and then add the two with all of it being print visible. I have this so far but can not figure out how to add the two arrays.

#include <iostream>
using namespace std;
int main ()
{
{
int const ROWS = 3;
int const COLUMNS = 3;
int square[ROWS][COLUMNS];

[Code] .....

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C :: Dynamic Arrays And Pointers

Feb 11, 2013

I am having troubles with dynamic arrays and pointers. All the errors are of that kind. I think when I am assigning malloc to an array we assign to its address.

Code:
/*Create an array of genes of the large matrix*/
gene_t gene,gene1,gene2;
gene=malloc(INITIAL*sizeof(gene2)); Code:
while(...) {
if (gene_num==current_size){

[Code] .....

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C++ :: Dynamic Allocation For Arrays

Oct 1, 2014

Code to allocate the memory for my arrays in the create array function.

#include <iostream>
#include <cstdlib>
using namespace std;
typedef int* IntPtr;
const int NUMLABS = 4;

[Code] ....

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C++ :: Multiply Two Dynamic Arrays

Mar 28, 2014

By using operator overloads i need to be able to * two dynamic arrays;

this is what i have so far

MyInt operator* (const MyInt& x, const MyInt& y) {
MyInt Temp;
int carry = 0;
if(x.currentSize > y.currentSize){
for( int i =0; i < y.currentSize; i++)
for(int j = 0; j < x.currentSize; j++)

[Code] ....

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C++ :: Dynamic Arrays Error?

Mar 4, 2014

i was trying to make a dynamic array in this form :

int x;
cin>>x;
int ar[x];

my g++ (gcc) compiler on linux refused to create an array without a fixed size , however using the same code on windows on dev-cpp it was complied and executed , also it allowd me to create and use the dynamic array , i thought it was a compiler bug , however when i restarted and returned to g++ it compiled and executed the code although it never did before i tried the code on windows , how can that be and is it dangerous ?

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C++ :: Dynamic Containers With Arrays?

Feb 14, 2015

Im trying to create a function that searches my array for a specific string, and then displays that string and the other content associated with it. I'm basically searching for a keyword within an array that has multiple strings with in each element.

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C++ :: Adding Arrays / Strings Together?

Oct 25, 2014

You will have two file streams: an input file stream for the file to be normalized and an output file stream that contains the normalized file. You should issue an error message and exit the program if either file cannot be opened. Your program should prompt the user for the filename of the file to be normalized (the input file). The output filename should be the input filename with ".normal" added to it. For example, if the input file is "data.txt", the output file name will be "data.txt.normal".

Be careful to not leave an extra blank line at the end of your output file.

My question here is how do I rename the file that the user entered to have a ".normal" at the end of it? I was thinking along the lines of having to string names and changing the second string's name and use that as the output file. any examples cause I didn't exactly get that to work.

#include <iostream>
#include <fstream>
#include <string>

[Code]....

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C++ :: Adding Two Arrays With Different Sizes

Sep 6, 2013

#include <iostream>
#include <array>
#include <sstream>

[Code].....

I need to add thevArr[I] and vArr1[I] and store in vArr2[I] but I cant figure out how to drop the value or replace with a 0 if vArr is bigger than vArr1. IE: 1st number: 123 2nd number: 4567

Ill get something like this:
1 2 3
4 5 6 7
5 7 9 -827349

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C++ :: Dynamic Memory Allocation (arrays)

Feb 24, 2014

I have recently bought a copy of "Jumping into C++" and have come to chapter 14 ( dynamic memory location) and have a question.

On page 153-154 an example of dynamic allocation is given for array's of int. How would the code look like for strings or structs ?

The allocation was given by:

Code:
int *growArray (int* p_values, int *size)
{
*size *= 2;
int *p_new_values = new int[ *size ];
for ( int i = 0; i < *size; ++i )
{
p_new_values[ i ] = p_values[ i ];
}
delete [] p_values;
return p_new_values;
}

Sample Code I tried to use this for an array of structs but failed completely....

I used the following struct Code:

struct user{
int days;
string name;
};

and the allocation function (which does not work):

Code:
struct user *growarray (struct user *p_values, int *size) {
*size *= 2;
struct user *p_new_values = new struct user[ *size ];
for ( int i = 0; i < *size; ++i )

[Code].....

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C++ :: How To Initialise Dynamic Arrays Of Objects

Oct 22, 2014

Say I have a class called Play now I have a constructor called Play(int, char, int); I create Play play=new Play[2]()//default const Now i want to initialise different values of play objects using play(int char int) Whats the syntax? play[i](vale, value value); ? Its not working..

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C++ :: Freeing Dynamic Arrays From Memory

Sep 27, 2013

So I'm trying to wrap my head around dynamic arrays, and I've finally figured out how to build one, using

int arraysize = randomnumber;
int* arrayname = new int[arraysize];

Now, how to delete the array. Can I free the whole array from any scope in my program using a simple line like delete arrayname;?

Also, since I'm working in heap, I can't rely on the debugger to show me when I'm doing something wrong, If I create a struct such as :

struct twoints {int one, int two};

and then try to create a dynamic array of said struct using

int arraysize = 5;
twoints* arrayname = new twoints[arraysize];

Am I basically creating an array of 5 two ints?

//is it the same as doing this?

twoints arrayname[5];

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C++ :: Class With Pointers And Dynamic Arrays

Apr 25, 2014

Class with Pointers and Dynamic Arrays

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C++ :: Big Integer Class Using Dynamic Arrays

Mar 27, 2014

I have become overwhelmed an frustrated at these current operator overloads!

Currently I still can not get my +,* or istream operators working at all!

#include <iostream>
#include <cstring>
#include "myint.h"

[Code]....

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C++ :: Proper Declaration Of Dynamic Arrays

Dec 10, 2013

I started to practice some C++. I use to program in C and a little C++. Anyway, I am writing code that creates a dynamic array. I would like to be able to do something like

galaxyobject[object] -> uniqueid = in the class but I do not think I have it setup right.

Question.
1. Is the code correct?
2. Why can't I use the above line without a compile error or segment fault?

int main() {
cout << "ProteusCore Server" << endl;

// create a galaxy system with a certain amount of objects
galaxy galaxysystem;
galaxysystem.IntializeGalaxy(100);

[Code] ....

I made the code available to see on sourceforge as Proteus 3d Game Engine. It is something I would like to work on.

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C++ :: Pointer To Point Dynamic Arrays?

Jan 31, 2013

Do I really need to create a separate pointer to point to dynamic arrays?

T* temp = new T[capacity_ * 2];
T* tIter = &temp; //Do these need to be here?
T* dIter = &data; //Or can I use *(temp + i) and *(data + i)?
(for unsigned int i = 0; i < size_; i++) {
*(tIter + i) = *(dIter + i);
}

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C++ :: Creating Dynamic Arrays / Structures

Feb 7, 2012

We are supposed to create a menu with an option to add a car (make, model etc) to inventory. I have the structure format set up as far as adding the car, but I am stuck on how to make it a dynamic array of structures or whatnot (I'm not really sure on what I'm trying to do in the first place!) Basically, the user can choose to add a car and its info in. How do you set up the array to add whatever number of cars is needed? Will it be able to add more cars should the user come back to the program later?

This is the instruction of this portion of the project :

Menu Application
Add a car to inventory
Prompted to add
Make, Model and Year, Color, Miles, Price
Finish (adds the car to the file)
Cancel takes you to the main menu

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C++ :: Adding Arrays And Matrix To A Class?

Feb 5, 2014

I'd like to start out by adding an array to a C++ class. I'd like to be able to reference the array using a class object that I create, for example:

Class is Stone.

Stone Bob is an instance of "stone" that I name "Bob".

"Bob.array[1] = "granite";" tells the compiler that the second element in the array (with the first being the zeroth element) is a string containing "granite".

I'll eventually want to extend this to an n x m matrix within the "stone" class that can be referenced as: Bob.matrix[1][3]="lignite";

I tried to make this work using a text again and again last night to no avail. My code is below.

NOTE: Since I am dynamically allocating memory space, I'd like to avoid memory leaks when using this class with dynamically allocated arrays and matrices. Not sure how to do this. Also need some insight into "destructor", and why my simple version reduced to a comment below doesn't seem to please the compiler.

CODE FOLLOWS:

Code:
// AINOW.cpp : Defines the entry point for the console application.
//
#include "stdafx.h"
#include <iostream>
#include <string>
using std:: string;
using std:: cout;
using std:: endl;
using std:: cin;

[code]....

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C++ :: 2D Arrays Adding Rows And Getting Averages

Apr 22, 2015

How to get my functions to work. I have to use void functions but I'm lost. I have to bring data in. An array of numbers.

8 27 33 14
81 146 305 249
412 71 226 4
144 55 97 493
133 265 788 240
380 117 88 25

The program works great until I add the computeSums or computeAvgs functions.

Code:
#include <iostream>
#include <string>
#include <iomanip>
#include <fstream>
#include <cmath>
using namespace std;
void computeSums(int fishArray[][4], int rowSum[], int colSum[]);

[Code] .....

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C++ :: Adding And Subtracting Integer Arrays?

Apr 23, 2013

I am currently working on a program that uses a class to store integer arrays. I have most of the code done, but I am having trouble on the main.cpp part of my program. The program should display this:

OBJ 1:
2 3 4
OBJ 2:
1 4 -2
Addition:
OBJ 1 =
3 7 6
Subtraction:
OBJ 1 = 1 -1 6

But when I run and compile my program, this is what I get:

OBJ 1:
2 3 4
OBJ 2:

ADDING:
OBJ 1 =
4 6 8
Subtraction:
OBJ 1 =

Here is my current main.cpp:

Code:
#include <iostream>
#include "SafeArray.h"
using namespace std;

[Code].....

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C++ :: Passing Dynamic Multi-Dimensional Arrays

Jan 29, 2015

I need to create subfunctions to do basic Matrix mathematics (addition, subtraction, etc.) I need to be able to pass bot of my Matrices to subfunctions. I started with the addition sub function and I cant get the code to run. I keep getting expected primary-expression before ']' token error for line 75.

#include <iostream>
#include <stdio.h>
using namespace std;

[Code].....

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C/C++ :: 2D Dynamic Arrays - How To Create And Give Values

Apr 23, 2014

I cant get with part of it is wrong, i want to sum every row, too.

// Color Number.cpp : Defines the entry point for the console application.
//  
#include "stdafx.h"
#include<conio.h>
#include<iostream>

[Code].....

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C++ :: Dealing With Dynamic Arrays - Printing Initialized Objects

Jul 15, 2013

I have a problem in dealing with dynamic arrays. I have initialized the objects and now i want to print them.

Code: // main
char* namesList[] = {"Brad Shaw","Aimen Adams","Sal Dimitry","Cristi Anreaz","Poala James"};
int idList[]={232,444,135,52,134};
Team t1( namesList,idList,5,"waqas");
t1.Print_team(); My class Team looks something like this:

[Code] ....

The print function does not work. I have to implement the print function without taking any parameters.. How should i do that ?

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