C++ :: Omp Locking Indices In Array?

Feb 13, 2014

Whats the fastest lock to use when a few indices in an array is to be locked?

Example:

Code:
some global array = {0,1,2,3,4,5,6,7,8,9}
...
//omp section
one processor needs to lock indices 3,5,6

for(i:loop through 3,5,6)
which lock on :
array[i]

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C++ :: Crash When Initializing Indices Array

Nov 26, 2012

Why I get a crash when initializing the indices array below (bottom)-

Code:
struct TerrainGroupData {
TerrainGroupData(){};
TerrainGroupData(Ogre::Vector3 ** iVertices, unsigned long ** iIndices, size_t* iFaceNum, size_t* iVertNum) {
vertices = iVertices;
indices = iIndices;

[Code] ...

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C++ :: Search Dynamic Array For A String And Return Indices

Feb 20, 2015

I need it to search a dynamic array which I build from an input file. When it finds the user-input string, I want it to store the line number, and continue searching, and record all lines that contain the user-input string.

Here is a link to my complete main.cpp, header file, and implementation file. The function I am having trouble with is "Bagger::lineSearch"

[URL] ....

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C# :: Display Indices In For Loop

Jun 28, 2012

I'm writing a program that will display 70 random temperatures, using an array that stores each number. They are going to be divided into weeks (7 temperatThe loures per line), and before displaying each of the seven temperatures, I want to first display the week #. The loops I'm using work, however the variable 'i' always first displays 2, and then counts. The loop initializes it to 0, so I don't know why it's immediately obtaining a value of two. The code is posted below.

Code:
static void DisplayTemps(int[] a)
{
Console.WriteLine("Su M T W Th F S");
for (int i = 0; i < a.Length / 7; i++)
{
Console.Write("Week {0} ", i);
for (int j=(i * 7); j < a.Length; j++)

[Code] .....

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C/C++ :: Indices Returned In Bsearch

Jul 14, 2014

I have some struct which contains: void *elems (basically a pointer to an array of contiguous memory).

I want to use bsearch to return a pointer, and then somehow figure out where in the array that value is. Having a pointer in this case isn't enough, I need to know what the index is. I've tried a number of things:

int index;
void *value = bsearch(key, start_ptr, cv->count, cv->elemsz, cmp);
index = &value - &start_ptr;
return index; [
Replacing the second line with:

// in the first instance
index = (char*) value - (char*) start_ptr;

// in other instances...
index = ((char*) value - start_ptr))/cv->elemsz)

But nothing works.

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C++ :: Bone Parent Indices To Linked List

Jul 6, 2014

I have an array of bone parent indices (as intgers), where root bone is tagged as -1, bone can have only one parent. At some point i need to traverse thru all children of some arbitrary bone (leaving others untouched) but this seems tough to do with this setup.

I cannot come up with algorithm to create linked list like hierarchy from this , with old DX9 API in their animation system we have structure like this:

struct D3DXFRAME { // bone
... // some irrelevant data members
D3DXFRAME* pFrameSibling;
D3DXFRAME* pFrameFirstChild;
};

Where I can simply use recursion to achieve what I want.

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C++ :: Create Array Of Playing Cards / Assign Values And Suits Then Shuffle The Array

Nov 24, 2014

I got this program to create an array of playing cards and assign the values and suits and shuffle the array. I'm at the point where I need to output the cards but I need to burn the first card by making it output "**" instead of the card. my cards[] is a constant so I can's assign the first card as such.

void showCards(const int cards[], int numCards, bool hideFirstCard) {
if (cards[0]) {
hideFirstCard=true;
cards[0] = '**';
} for(int a = 0; a <= numCards; a++) {
cout >> showCard(cards[a]);
} }

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C++ :: Accept Integer Array And Its Size As Arguments And Assign Elements Into 2 Dimensional Array

Jan 10, 2015

Write a program using user-defined function which accepts an integer array and its size as arguments and assign the elements into a two dimensional array of integers in the following format: If the array is 1,2,3,4,5,6, the resultant 2D array is

1 2 3 4 5 6
1 2 3 4 5 0
1 2 3 4 0 0
1 2 3 0 0 0
1 2 0 0 0 0
1 0 0 0 0 0

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C++ :: Write Function That Takes Array And Returns True If All Elements In Array Are Positive

Jan 21, 2013

Write a function that takes an array and returns true if all the elements in the array are positive, otherwise, it returns false.

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C :: Store Character Array In Reverse Order Then Display Reversed Array

Jun 14, 2013

The program should store a character array in reverse order then display the reversed array. I have also included in the code that will display the actual characters into the array as it loops through. So I know the characters are being stored, but why doesn't it display the entire string when I call it?

Code:
#include<stdio.h>
int main(){
char str[50];
char rev[50];
printf("Enter Desired Text: ");
scanf ("%[^

[Code] ....

Is it just my compiler?

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C :: Parsing Char Array To Array Of Struct To Process Packets

May 28, 2013

I wrote this simplified version of a program i am writing that parses data in UDP packets. In the process of doing so i pretty much answered all my questions and fix all the problems i was having.

decodeSystemMap function will be in loop, and will proccess packets that have mostly the same data, only a few items will be added or changed or deleted.

whats the best way to check if there are any new, deleted, or removed items in the packet and only modify those?
Is there anything unsafe / dangrous about the way the code is now?

Code:
/* * File: main.c
* Author: david
*
* Created on May 23, 2013, 11:57 AM
*/

#include <stdio.h>
#include <stdlib.h>

[Code] ....

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C :: How To Make A Function Read From Array A But Put Select Parts In Array B

Jul 30, 2013

im trying to read in 1 array and get 2 as outputs from 3 different functions.my read array is easy enough were im getting confused is how to read that array, separate it and take out only the parts i want and place them into a 2nd, then again a 3rd array.i have the following so far:

Code:

#include<stdlib.h>#include<stdio.h>
#include<unistd.h>
#define SIZE 10
}

[code]....

this compiles without a complaint, but when i go to run it no longer responds after taking the 10th element (well 9th if counting from 0).I think i have the if correct for the even odd section, but when i try to populate B or C array with the output of that if statement from A is were i think things are dying...

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C++ :: Storing Numbers Into 2D Array - Invalid Types Int For Array Subscript

May 17, 2014

#include <iostream>
#include<fstream>
int decryption(int);
int multiply(int,int[][2]);
using namespace std;
main(){
int n;
ifstream inFile;
inFile.open ("out.txt");

[Code] .....

I was trying to store numbers read from a text file into 2D array but I am getting the error above.here is where the error occurs:

line 33: cout<<m[i][j]<<" ";

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C++ :: Using Loop To Process Array Of Characters Starting From Beginning Of Array?

May 3, 2014

Assume you want to use a loop to process an array of characters starting from the beginning of the array. You want the loop to stop when you read the null terminator character from the array. Fill in the loop test condition that will make this work correctly.

index = 0;
ch = array[index];
while ( _____________________________)
{
// process the character
index++;
ch = array[index];
}

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Visual C++ :: Reading Into Array / 2d Array From Mixed Text File?

Jan 18, 2014

I know to read a strings into array and tables.. what is they are mixed up?? strings are just names ( 3 characters) and there are bunch of table.. the max size was set to 60

ex. text file

JES
DAN
JEN
.
.
.
01010101
10010101
RAM
JET
01010010
10100101
.... and so on

should i use a while loop?

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C++ :: Multidimensional Array - Moving Whole Int Array Row As A Single Unit?

Feb 27, 2013

I have a multidimensional array that runs parallel with a string array

Lincoln 120 300 400
Parks 100 500 250
Shakespeare 0 30 50
Ghandi 250 100 40
Ashe 300 50 175
Rodriguez 87 118 320
Curie 284 0 112

I need to sort this and I know how to do it. But I need to sort it again with the highest value in the first row and keep all information in that row paired with the name . So

Lincoln 120 300 400
Parks 100 500 250

Parks 100 500 250
Lincoln 120 300 400

I need so swap this whole rows. I'm using dynamic array. So my question is Do I have to do a bunch of temps to move them? Or is there a way to move the whole int array row as a single unit?

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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]

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C :: Print Values Of Array From Function By Passing Array?

Nov 1, 2014

I wanted to print the values of a array from a function by passing the array as well as the number of elements to be read. For a single dimensional array, this is how i have written it. It's pretty straight forward. I want to read 5 elements from the 5th element in the array.

Code:
#include<stdio.h>
void display(int array[],int size) {
int i;

[Code]....

With this code I want to print the five elements from the element present in [0][4].

But shows an error that

Code:
D:BennetCodeblocks CLearning CSingleDimentionalArray.c||In function 'main':|
D:BennetCodeblocks CLearning CSingleDimentionalArray.c|18|warning: passing argument 1 of 'display' from incompatible pointer type [enabled by default]|
D:BennetCodeblocks CLearning CSingleDimentionalArray.c|2|note: expected 'int (*)[10]' but argument is of type 'int *'|
||=== Build finished: 0 error(s), 1 warning(s) (0 minute(s), 0 second(s)) ===|

I know when you pass a array as an argument it gets decomposed into a pointer, but with a multi-dimensional array this is not the case. how this works for mult- dimensional array's?

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C++ :: Passing 2D Array To A Function Where Size Of Array Is Not Known At Runtime

Jun 27, 2014

I'm wondering if it is possible to pass a 2d array to a function where the size of the array is not known at runtime.

I've tried

function ( array[][6] ) ;

But the size of the array has to be constant so it cannot be declared later.

I've tried using a template but you still have to declare the size of the array at runtime. Is this even possible at all?

The only other way I can think of is using a dynamic 2d array but how to create one and manipulate it.

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C++ :: Setting Up Grid For Array And User Initialization Of Array

Apr 7, 2014

Trying to get code to look like

Row 1: ^^^
Row 2: ^^^
Row 3: ^^^

const int siz = 3;
for (int t=0; t<siz;t++) {
cout << "Row" << t+1 << ":";
cout << endl;

[Code] ....

Also was wondering if i wanted to separately ask the user to choose a location to add a char who would i do that ?

( im thinking * cin << arry[][]; ? not sure but ask for them separately
array []1
array []2
= array [][]

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C++ :: Assigning Elements Of 1-D Integer Array Into 2-D Array Of Integers

Sep 27, 2013

I am having problem in writing the code for the problem "To assign the elements of 1-D integer array into 2-D array of integers such as if the array is 1,2,3,4,5,6 The resultant 2-D array should be like :

1 0 0 0 0 0
1 2 0 0 0 0
1 2 3 0 0 0
1 2 3 4 0 0
1 2 3 4 5 0
1 2 3 4 5 6
"

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C++ :: Convert Binary Search With Int Array To Use String Array

May 8, 2014

I'm having trouble converting this binary search with an int array to use a string array..

Code:

#include <iostream>
#include <string>
using namespace std;
// Function prototype
int binarySearch(string [], int);

[Code] .....

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C++ :: Allocating Array Of Pointers To Dynamically Allocated Array?

Jan 18, 2014

I'm trying extremely hard to understand pointers and I have the basic concept down.. I feel as though my knowledge of dynamically allocated pointers and pointers in general is not enough to understand the logic behind what I'm trying to do. The problem is that the donations array must be able to accept any number of donations. I've made it do just that, but there is also an array of pointers which must each point to the same element in the donations array. The program works if I assign int *arrPtr[100] for example, but it does not work if I try to dynamically allocate it to accept the same number of elements for donations entered by the user. Here it's the snippet

#include <iostream>
using namespace std;
//Function Prototypes

[Code]....

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C# :: Take Sorted Array Of Integers And Return Array Compacted

Jun 7, 2014

Objective: Write a function with the given signature that will take a sorted array of integers and return the array compacted. That is, given an array containing: 1, 2, 6, 8, 8, 8, 9, 10, 10, when the function returns, the contents of the array should be: 1, 2, 6, 8, 9, 10.

Restrictions:
Cannot use Distinct method

Signature:
public static int[] CompactArray(int[] input)

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C/C++ :: Take Values From One Array And Searches For Their Index Position In Another Array

Dec 9, 2014

My program takes the values from one array and searches for their index position in another array (linear search algorithm). This is an example of the issue im having(its not part of the actual code below)

a[]={1,2,3,4,5,6}
Arr[]={1,2,2,3,4,5}

If it finds 1 in arr, it returns 0, which is fine but if it finds 2 in arr it return 1 and 1 instead of 1 and 2.

for (int q=0; q=size2;q++) {
int rs=secfunc(array1;size1;array2[q])
if(rs>=0) {
cout<<rs << "";

[Code] .....

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C++ :: Convert Uint8 Array To Unsigned Char Array?

Mar 2, 2012

I have the following code which attempts to assign a u_int8 array of 256 to an unsigned char[256]:

Code:
unsigned char testData[256]=pSample->data;

I get the compilation error:

error C2440: 'initializing' : cannot convert from 'const uint8_t [256]' to 'unsigned char [256]'

What is the safe way to cast or convert here?

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