C++ :: How To Change Array To Dynamic

Sep 13, 2013

So this is the code I have so far, I didn't know it had to be a dynamic array so how would I Utilize dynamic array allocation to size the modal array

#include <iostream>
using namespace std;
int main() {
const int arraySize = 25;
const int patternSize = 10;

[Code] ....

View 1 Replies


ADVERTISEMENT

C++ :: How To Change 2 Dynamic Array Int Vector Class

Oct 29, 2014

// dynamic memory for 2D char array
char **board = (char**) calloc(column, sizeof(char*));
for(int i=0; i<column; i++)
board[i] = (char*) calloc(row, sizeof(char));
//for char 255 row and colum
char temp[255];
inputFile.getline(temp,255);

[Code]...

so i want to change into vector class like Vector<board>row;

View 8 Replies View Related

C++ :: FFMPEG - Dynamic Change Of Bit Rate For Video

Apr 11, 2012

I use ffmpeg codes in my C++ app and would like to control the bit_rate parameter for VIDEO there. I tried to change its value in work (via ost->st->codec->bit_rate = 150000), but ffmpeg did not wish to change it.

I tried to make re-init of the codec:

Code:
....
ost->st->codec->bit_rate = 150000;
AVCodecContext* newContext = avcodec_alloc_context3(ost->enc);
avcodec_copy_context(newContext, ost->st->codec);
avcodec_close(ost->st->codec);
av_free(ost->st->codec);
ost->st->codec = newContext;
avcodec_open2(ost->st->codec, ost->enc, &ost->opts);

the program hanged after that codes.

View 2 Replies View Related

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].....

View 2 Replies View Related

C++ :: Why Can't Static Array Copy Values From Dynamic Array

Mar 13, 2013

But it can the other way around

Code:
static_Array= dynamic_Array;
dynamic_Array = static_Array;

The second statement works and i'm able to print out both arrays with equal values but with the first

[code] static_Array = dynamic_Array;I get incompatible types in assignment of 'int*' to 'int [7]' is the error I get [/code]

View 2 Replies View Related

C :: How To Use 2D Array In Function And Change Array Values

Apr 17, 2014

use 2D array in function and change the array values. I do not know if I can use array by calling from a function. I have 6 row 6 column array, I used it inside a function and for the another function I just need to change 4. row 4. column and I do not want to type array to just change one part. I do not know if there is another way or not

View 7 Replies View Related

C :: Pass Array To A Function And Change The Array

Oct 1, 2013

I want to pass an array to a function and change the array, how can I do that?

Code:
#include<stdio.h>
/*function to change the array*/
void rearng(int *qw) {
int i,j,a;
int sa[8]; //temp array
int c = 0;
int high;

[Code] ....

View 6 Replies View Related

C++ :: Coin / Money Change Code Doesn't Give Exact Change

Feb 20, 2013

My coin/money change code works when there can be an exact change each time, i.e. when the 1 cent option is available. However, when the change options are only $10, $5, $1, 25 cents and 10 cents, it does not give me what I want for instance, I wanted to get change for $237.80, I was expecting to get:

23 10's, one 5, two 1's and 8 dimes. However, the code below is giving me 23 10's, one 5, two 1's and 3 quarters (there is no option left for the 5 remaining cents).how to fix it?

Code:
#include<iostream>
#include<algorithm>
#include<vector>
using namespace std;
void change(double cents, int a[]);
int main() {
double Dollars;
double cents;

[code]...

View 14 Replies View Related

C++ :: Change Length Of Array Using GDB

Jun 16, 2014

I have a program with the following code, and I need to be able to either change the value of any or all of the strlen or to replace one or all with a temp array value. All values of the expression are arrays.

if (::strlen(tc_buf) + ::strlen(maxtime_buf) + ::strlen(" ") < sizeof(localBuf))

View 1 Replies View Related

C++ :: How To Change Values Of Array

Feb 1, 2015

how can i change the array value and display the updated value. for example this is the output beginning of the program

-----------------------------------------------------
Part Description Number of parts in the bin
----------------------------------------------------

valve 10
Bearing 5
Bushing 21
Coupling 7

[Code].....

View 1 Replies View Related

C :: Dynamic 2D Array To Function?

Jul 15, 2013

Code:
Int** d = malloc( ROWS * sizeof(int*));
for (i = 0; i < ROWS; i++)
d[i] = malloc(COLS * sizeof(int));
fx(d);

My question is, in a function declaration, why do I not have to specify the number of columns. How is this different than when I pass a static 2D array to a function, in which I must declare the function parameter with the number of columns.

Code: void fx(int d[][COLS]);
VS.
Code: void fx(int **d);

View 7 Replies View Related

C++ :: How To Get Size Of Dynamic Array

Jun 12, 2013

I remember in C++, when a dynamic array is allocated, the size of this array is stored right before the array in memory. Therefore compiler knows exactly how long, when this array is deleted.

Do all compilers store the size this way? Is it a safe method to get the size of a dynamic array?

Here is a example code, it works fine on Visual Studio 2012.

#include <iostream>
using namespace std;
class dummy {
public:
dummy() {
cout<<"dummy created"<<endl;

[Code]...

View 2 Replies View Related

C++ :: Dynamic Map Creation Or Array

Mar 4, 2014

I need to create dynamic array or map. for example

CString *a1;
CString *a2;
CString *a3;

it minimized to using for loop.
for (int i=1;i<=3;i++) {
CString s="a"+"itoa(i)"
CString *s;
}

Something like this. its same as map concept.

View 1 Replies View Related

C++ ::  Dynamic Allocation 2D Array

Nov 14, 2013

I need to confirm that this problem cannot be solved without a pointer. Namely I need to read the rows and columns number from the user cin >> m, n and then use to declare an array int A[m][n];

However as m and n are not constants I am not able to do that. Is there a workaround? The following is the solution I came with BUT using a pointers which should be not the case.

// solution with using pointers as "int A[m][n]" does not work for me!!!
void TwoDimensionalArrayFunc(){
int m = 0;
int n = 0;

// instruct the users to enter array dimensions
cout << "Please insert value for m:";
cin >> m;

[Code] ....

View 6 Replies View Related

C++ :: Using Array With Dynamic Size?

Feb 6, 2013

arrays with dynamic sizes. That being said, I'm working with a simple code which seems to work just fine, my only concern is that once I display the 'char array', not only displays the user's inputs but some extra data, symbols and what not.

why, if to my understanding the first user's input already sets the size of the array

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

[Code].....

View 12 Replies View Related

C++ :: Dynamic Allocation From Array?

Dec 26, 2012

I need to write 2 functions:

1. MyMalloc
2. MyFree
___________________________

I have a 1000 bytes global array (which did not dynamic allocated).

I need to make "dynamic allocation" from this array.

For example - MyMalloc(50) ---> The program will allocate 50 bytes OF THE ARRAY'S SIZE.
------
MyFree(pointer) ---> I need to check if the pointer is in the array and free the space.

It should be managed by blocks. The array should also contain the manage variables (for me).

View 19 Replies View Related

C++ :: Change From Array To Pointer Arithmetic?

Sep 12, 2013

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

[Code]....

View 3 Replies View Related

C++ :: Copy Constructors For A Dynamic Array

Dec 13, 2013

I am trying to figure out copy constructors for a dynamic array and I am definitely missing something. If I go into the copy constructor routine during debug, the values appear to be correct but they don't percolate up to the newly created object. I'll post a portion of the code below:

Code:

// include header files for the classes that are being used
#include "stdafx.h" //

NOTE: THis reference must be added to all cpp files in Visual Studio Express 2013

#include <iostream>
#include <string>
#include <cstdlib>
#include <map>
using namespace std;
const int ARRAY_SIZE_DEFAULT = 32;
class vectorOfInt {
public:

[code]....

The size of c is 0. Values of a were not copied to c, although they appear to do so within the copy constructor routine.

View 7 Replies View Related

C# :: Not Loading Dynamic Array (128,8) Correctly

Feb 14, 2013

Code:
public void dam_data_setup() {
// fill list
damgtype.Add( den1);
damgtype.Add( den2);
damgtype.Add( da1);
damgtype.Add( da2);
damgtype.Add( db1);
damgtype.Add( db2);

[Code] .....

This is a genetics program and is to parse the source array and write all possible combinations to a new array. All sections but dilute work correctly. For some reason the dilute's Boolean is not testing true when it should. This is causing data corruption.

View 3 Replies View Related

C :: Dynamic Array Of Pointers To String

Jun 11, 2013

I have a little problem with one of my functions. The function purpose is to get a number (n) and create an array (size n) with pointers to strings (each string length is 20 chars) and i don't know why but during the debugging i get a <bad ptr> message and this message :

CXX0030: Error: expression cannot be evaluated

This is my function:

Code:
char** getlist(int n) {
int i=0;
char **arr;
arr=(char**)malloc(sizeof(char)*n);
if (arr==NULL)

[Code] ....

View 8 Replies View Related

C :: Dynamic Array Of Linked List

Jan 29, 2014

I am trying to create an dynamic array (lno) This array will store addressess of different Linked list. What exactly I want is:- Take N Number of Linked List user want to create> eg. 2 now It will create 2 linked list for which I am trying to allocate memory.

Code:

struct node{
int data;
struct node *next;
}

first;
lno[0] Node 0's first address stored in ln[0] lno[1] Node 1's first address stored in ln[1] Here is the code in which I am facing problem with error Illegal structure Operation

Code:

#include<conio.h>#include<stdio.h>
#include<stdlib.h>
struct node
{
int data;
struct node *next;
};

[code]....

View 1 Replies View Related

C++ :: Dynamic Allocation For String Array

Jul 27, 2013

I coded a program that takes some strings and lexicographically orders the strings and its substrings. I have used dynamic memory allocation technique and its working fine for all strings without consecutive same alphabets.I use a list in which a string is placed in its exact position by moving the others right.

#include <stdio.h>
#include <string.h>
#include <math.h>
#include <stdlib.h>
#include <conio.h>

[code]....

View 4 Replies View Related

C++ :: Deleting Elements In Dynamic Array

Nov 22, 2013

I'm having a bit of trouble trying to delete elements in a dynamic array of objects. I tried to delete elements by shifting that particular element and the ones that follow over one element and then assigning the last one to NULL.

cin >> input;
while (input != -1 || k == 7) {
for(int i = 0; k < numberOfRecords; i++) {
if (input == records[k].id) {

[Code] .....

View 3 Replies View Related

C++ ::  Dynamic Array Resize Function

Apr 22, 2014

I made a resize function for my dynamic array template class that goes as follows. Note that the private member variables are T* arr, unsigned used, and unsigned cap.

template <class T>
void darray<T>::resize(unsigned size) {
if (size > cap) {
T* temp_arr = new T[size];

[Code] ....

Whenever I use this function to increase the size of the array, it will work the first time I need to use it, but after that, Visual Studios will trigger a breakpoint at line 14, and if I continue past the breaks, I eventually get _CrtIsValidHeapPointer(pUserData) assertion failure.

View 4 Replies View Related

C++ :: Passing Dynamic Array To A Function

May 8, 2014

I am trying to pass a dynamic array to a function which will:

- Copy the contents of the array to a temporary dynamic array
- Change the array passed in to one size bigger
- Copy the elements from the temp array back into the newly changed array
- Insert an item into the last spot of the array

Here is my code:

#include <iostream>
using namespace std ;

void make_array ( int Old [] , int & old_size , int toInsert ) ;
void zero_array ( int arry [] , int arry_size ) ;
void print_array ( int arry [] , int arry_size ) ;

[Code] .....

The output seems like a memory address but is just a very large number, what have I done incorrectly to cause this?

View 2 Replies View Related

C++ :: Initializing 2D Dynamic Array With All Entries 0?

Dec 29, 2013

is it possible to create a dynamic array with all entries in it equal to 0?

int** adjMatrix;
adjMatrix= new int*[numOfVertices];
for(int i=0; i<numOfVertices; i++){
adjMatrix[i]=new int[numOfVertices];
}

View 1 Replies View Related







Copyrights 2005-15 www.BigResource.com, All rights reserved