C++ :: Passing Value Into Array

Apr 16, 2014

I am writing a program for a poker game.. I created a class to get cards and create deck.. the problem I am having now is how to deal 5 cards to an array to be evaluated later. I want to call the array player1[5]. So I tried to create a pointer called GetCard, and was hoping to then pass the value into the player1[] array. I tried to use pointer but I get the following error

4931[Error] void value not ignored as it ought to be

Code: #include <stdlib.h>
#include <iostream>
#include <ctime>
#include <algorithm>
using namespace std;

[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 :: Passing Array To Function?

Jul 31, 2014

I want to pass array to function, to fill array with new values and then to print the array in the main. But I have problem because it prints me just array of zeros. Maybe the concept is wrong, I'm new with passing arrays to function.

function:

Code:
void printSum(int *return_array) {
int return_array[3];
int i;
for(i = 0; i < 3 ; i++){
return_array[i] = 5;

Code:

void printSum(int *return_array);
int main {
int m_return_array[3];
int i,j;
for(i= 0 ; i < 3 ; i++){
m_return_array[i] = 0;
} printfSum(start,m_return_array);

[Code]...

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C :: Passing 2D Array To A Function

Sep 17, 2013

I need to pass a 2D array to a function. I want to know, where I may have made a mistake. This is the piece of code that I found on the web, and I am using it to allocate my 2D array.

Code:
signed char allocate2D( int** arr2D, int rows, int cols )
{
int i;
arr2D = malloc( rows*sizeof( int* ) );
if( !arr2D )
return -1;

[Code]....

My main function passes the 2D array to the function

Code: signed char read_root_message_file( int **Root_Messages, int *num ) This is how I pass the array in the main function to the above function:

Code:
int main( int argc, char *argv[] )
{
int **Root_Messages;
...
...
Root_Messages = NULL;
read_root_message_file( Root_Messages, &num_root_msg );

[Code]....

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C :: Passing Data From An Array And Using It In Another

Mar 18, 2014

I have been asked to write a lottery program in c using 5 separate functions 1 to take 6 numbers from user 2 to display the numbers 3 to sort the numbers 4 compare the chosen numbers to the winning numbers and 5 to list the frequency the user pick a number depending on how many times they play the game the problem im having is with the first 2 functions i can take the input and pass it to a display function but cannot get it to display the numbers here is what i have. The output from this is at the bottom .....

Code:
//function prototypes
int myNumbers();
void displayNums();
void sort();
void compare();

#include <stdio.h>
#define NUMS 6
#define WIN 7

[Code] .....

"Please enter your lucky numbers
1
2
3
4
5
6
Your numbers are 2286612"

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C :: Passing Array To A Function?

Apr 6, 2013

Would this be an example of passing an array to a function??

Code:

void wipe (int theArray[] ) {
int index;

printf("
Inside function wipe() sets each array element back to 0.
");

[code]....

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C :: Passing Array To Function

Jan 19, 2014

I am following a tutorial and the topic was passing array to function so i tried to do a BMI calculator by myself. I am using code blocks to compile the codes, it is actually working while using compiler's run button. But when I open the exe file, its closing the window after entering the persons' weights and heights. Here is the code

Code:

// Passing array to function example BMI calculator of n person
#include<stdio.h>
#include<math.h>
void assess(float bmi[],int a);
int main(void){
int n,i,j;
}

[code]....

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C :: Passing Struct Through Array

Apr 2, 2013

I am trying to pass a struct through an array to another array from one microprocessor to another microprocessor and then dereference that array to update the same exact struct on the other microprocessor.My goal is to always have values inside of both structs while sending any updates to the struct on the other microprocessor in the mean time but I seem to be looping through the data and the members of the struct seem to be cleared out after every clock cycle. I can verify this by the flashing of my leds which the struct controls.

FIRST MICROPROCESSOR

Code:

extern struct i2c_data * TX_Data;
extern struct i2c_data TX_Data_1;
extern struct i2c_data TX_Data_2;
}

[code]....

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C++ :: Passing Array To Function

Jan 8, 2014

I am learning arrays i want to whats the following effect of cods while passing array to the following function

void fun(array[])
void fun(array[4])
void fun(array[],4)
void fun(array[5],4)

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C++ :: Passing A Multidimensional Array

Sep 25, 2013

I'm trying to pass a two-dimensional array to a function. The function is defined as: long foobar(char foo[][CONST]); I have to create that array dynamically. Currently I do that this way: char* bar = new char[count * CONST];

But when I'm trying to pass the array I get a type conversion error. I tried a lot of different ways to pass the pointer and/or to allocate the memory, but apparently I didn't find the right way or combination of definition, allocation, casting and calling.I cannot change the definition of the function, which (IMHO) is pretty stupid. :(

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C++ :: Getting A Value From Object Passing It To Array

Apr 17, 2014

I am writing a program for a poker game.. I created a class to get cards and create deck.. the problem I am having now is how to deal 5 cards to an array to ve evaluated later. I want to call the array player1[5]. I tried to use pointer but I get the following error

#include <stdlib.h>
#include <iostream>
#include <ctime>
#include <algorithm>
using namespace std;
const char* FaceString[13] = {"Ace", "2", "3", "4",
"5", "6", "7", "8",
"9", "10", "Jack", "Queen", "King"};

[code]....

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C++ :: Passing Array In A Function?

Apr 18, 2014

i have defined an object which is an array of my class called Player now i want to pass this whole array as a parameter in a function, i think it will be done by using pointers but i am not able to figure out how it is done?

Player player[4];
void showscoreboard(" ", int cround){}
" " represents the blank where the array should b passed.

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C# :: Passing Array To Method With GUI

Sep 29, 2014

I have to create a program that accepts 10 numbers from user, and then I display a list of the numbers, the smallest one and the higher number. I have problems with displaying the smallest and higher number, I tried to Array.Sort and Array.Reverse, but I don't know what I'm doing wrong, this is my code:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace SmallAndLargeGUI

[Code] ...

Also I tried to set

if (x == 10)
numberTextBox.Enabled = false;

to block the textbox when the user has entered 10 numbers, but didn't work either...

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C++ :: Passing 2D Array To Function

Feb 10, 2013

I was trying to pass the following 2-dimensional array to a function called jac_inv

jac_inv(jac,3);

where jac is a 3x3 matrix
function is as follows:

void jac_inv(int *jac, int m) {
double determinant=0.0;
for(i=0;i<m;i++) {
for(j=0;j<m;j++) {
j_inv[i][j]=jac[i][j];

[Code] ....

However,I get the following error

invalid types 'int[int]' for array subscripts

Is it with regard to passing a multi dimensional array to a function?

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C++ :: Passing Array To Function?

Jan 8, 2014

i am learning arrays i want to whats the following effect of cods while passing array to the following function

void fun(array[])
void fun(array[4])
void fun(array[],4)
void fun(array[5],4)

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C++ :: Passing STL Array By Reference

Dec 31, 2012

How can I pass a matrix as a reference parameter? I am using the following declarations:

Code:
typedef std::vector< std::vector<std::string> > ss_matrix_t;

I declare the matrix with the following statement, where nRows and nCols are integers

Code:
std::vector< std::vector<std::string> > vI2Matrix(nRows, std::vector<std::string>(nCols,""));

The function is called with:

Code:
int read_files(std::string fname, int nCols, int nRows, ss_matrix_t &ssMat )

But I get a linker error:

error LNK2019: unresolved external symbol "int __cdecl read_splayed_files(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >,int,int,class std::vector<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >,class std::allocator<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > > >,class std::vector<class std::vector<class

[Code] ....

I suspect the syntax of the declaration, but I am not sure what to do here? If I change the call to the function, then the array ( matrix ) is passed by value, and it takes forever:

Code:
int read_files(std::string fname, int nCols, int nRows, ss_matrix_t ssMat )
// this takes ages ( it does compile and link )

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C# :: Passing Array List To A Function

Mar 10, 2012

Code:
using System;
using System.Collections;
using System.Linq;
using System.Text;
namespace ConsoleApplication1

[Code]...

When i try to compile, it gives a error saying "the parameter array must be a single dimensional array" what is the problem here.?

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C :: Passing A Pointer To Array Of Structs

Nov 20, 2013

what I am trying to do is to pass to a function the address of an array of structs, so I can later modify the items within the struct, within the array

Code:
typedef struct { //A struct of name auctionint bidder;float bid;} auction;
void myFunction (auction * auctionItem[]){(*aucItem[x]).bid = y;(*aucItem[x]).bidder = z;}
int main(){auction theItems[10];
myFunction(theItems);} Where x, y, and z can be any number.

When I try to run my code the IDE (I'm using Code::Blocks 12.11) does not give me any errors, but it does give me a warning:

warning: passing argument 3 of '<function name>' from incompatible pointer type [enabled by default]

and the note:

note: expected 'struct <struct name> **' but argument is of type 'struct <struct name> *'.Also, when I run the program, it will crash and return garbage.

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C :: Passing Array To A Function - For Loops?

Aug 17, 2013

I have tried to pass an array to a function. Why my code doesn't work for a[1][0], a[1][1] etc.

Code:
#include <stdio.h>
int i=0;
int j=0;
int main(void){
int a[3][3]={1,2,3,1,2,3,1,2,3};
void f(int a[3][3]);

[Code] ....

I think my problem is with the for loops. I will try to find the error a bit more.

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C :: Passing Array As A Parameter To Function

Oct 6, 2014

How come when we pass an array as a parameter to a function, the entire array is copied and is available to function?

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C :: Passing Array Of Pointer To A Function

Sep 7, 2013

Code:
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define MAX_CMD_LINE 500
void tokenize(char *cmd_ln, char *fun_tknzd[], int *argument_cnt);

[Code] ....

I am trying to pass the value of fun_tknzd to str_tknzd

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C++ :: Passing Array Into Function As Parameter

May 2, 2013

Write a program that inputs 10 integers from the console into an array, and removes the duplicate array elements and prints the array. By removing, I mean that you should make it appear as if the elements hadn't been there. You may assume that all the integers are between 0 and 100, Write at least 1 function in addition to the main function, and pass an array into that function as a parameter. e.g.

Please enter your 10 numbers: 1 2 3 4 5 6 7 8 9 10 The array contains: 1 2 3 4 5 6 7 8 9 10

Please enter your 10 numbers: 1 1 3 3 3 6 7 8 9 9 The array contains: 1 3 6 7 8 9

Please enter your 10 numbers: 1 1 1 1 1 1 1 1 1 1 The array contains: 1

The bolded area is where I'm having trouble. How I can go about doing this, passing an array into the function as a parameter?

Here is my code:

#include "stdafx.h"
#include <iostream>
using namespace std;
int main () {
const int MAX = 10;
int a[MAX] = {0};
int i;

[Code]...

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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?

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C++ :: Passing Char Array To Function

Nov 23, 2013

In the below program, When the getline function is called, it passes a char array of size 1000 by VALUE. It must have passed by value because there is no pointer or reference in the argument list of the getline function definition. And if that's the case, when exiting the getline function, isn't the s[] char array destroyed? And if it is destroyed, then when we reference line in the copy function, what are we actually copying?

#include <stdio.h>
#define MAXLINE 1000/* maximum input line length */
int getline(char line[], int maxline);
void copy(char to[], char from[]);
/* print the longest input line */
main() {

[Code] .....

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C++ :: Passing Array As Argument To Function?

Feb 10, 2013

how can i pass an array as an argument to the function? in getCoin() fcn, I am supposed to pass coins array as an argument to the function. fcn prompts user to enter coin(Date, Type and Country). values entered by user are read and assigned to the coins array. I tried the code below.

//# include "Coins.h";
#include <iostream>
#include <string>
using namespace std;

[Code].....

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