Matrix - need good programmer help

[alleyezonme]

*EDIT


cout << "Enter number of integers: ";
cin >> arrray[row][col];


OUTPUT:
Enter number of integers: 1 2 3 4

Say user inputs 1 2 3 4

how can I count the number of integers the user inputed and send it back to the variable col inside the array to be the new column.

-The user inputed a total of 4 numbers
-So now i want to reinitalize during run time the value of col in the array[row][col]

(array[row][4]) for better understanding

[Naughty Albatross]

Hi,
> I hope i have been pretty clear.
You haven't tried your best to make it clear.

What is the assignment question?

P.S : You may copy & and paste the assignment and show us the problem you are trying to solve.

Everybody here is glad to help when you get off the starting blocks :)

[Naughty Albatross]

So to sum up :
+ Input the number of rows of the matrix
+ Create the matrix (rows == colums)
+ Input value for each matrix element

Am I right?

P.S : You shouldn't have removed your second post. We need it so that we can understand your problem better.

[48T7M4Gy]

Definitely a case of obscure clarity but might we be looking at jagged arrays by any chance?

http://www.cplusplus.com/forum/beginner/192261/

[Naughty Albatross]

Do you have the code?

[alleyezonme]

for(int indexRow = 0; indexRow < ROW_SIZE; indexRow++)
{
cout << "Enter row " << indexRow << " for the 1st matrix: ";

for(int indexCol = 0; indexCol < COL_SIZE; indexCol++)
{
cin >> firstMatrix[indexRow][indexCol];
}
}

the main issue is initializing the array without a constant.
and i want to change the value of the array ROW and COL during run time.

But i get a compile time error because array must have CONST in [const][const]



right now i just have constant values for max col and mac row sizes.

I want to not use constant values and set the size of col and row by user input based on how many integers the user inputs on the first line

[Naughty Albatross]

Do you use std::vector?
Have you learned pointers?

[alleyezonme]

yes i have learned pointers

[Naughty Albatross]

Pointer method is a little bit difficult. Do you want to use this more simple & lazy approach?

[alleyezonme]

I want to use whatever approach i just want to know how to accomplish. Both ways maybe or what ever way yuoir willing to help me

[alleyezonme]

Ive been playing with pointers and I cant seem to make it work so anything will help that will accomplish the task.

[Naughty Albatross]

So before creating the matrix, the user has to input the number of rows & columns of the matrix?

[alleyezonme]

This is the kind of thing im testing

const int ROW = 0;
const int COL = 0;



int *column;
column = (int*) (&COL);

*column = 2;

int array[ROW][*column];

for(int indexRow =0; indexRow < 2; indexRow++)
{
for(int indexCol =0; indexCol < *column; indexRow++)
{
cin >> array[indexRow][indexCol];
}

cout << endl;
}


i need to change value of constant first before i can do anything

[Naughty Albatross]

int ROWS = 0;
int COLUMNS = 0;
int **array;

cin >> ROWS;
cin >> COLUMNS;

array = new int*[ROWS];

for(int indexRow =0; indexRow < ROWS; indexRow++) array[indexRow] = new int[COLUMNS];

// Input the matrix's elements

// Your code

// Free the array when not needed
for(int indexRow =0; indexRow < ROWS; indexRow++) 
delete [] array[indexRow];

delete [] array;