Shift contents of array using parameters in C++

Question

Hello,

I have been playing around with a bit of code for the past few weeks. The code is a display of the number 1. I want to essentially create a dot matrix style print out, where the 1 is continuously shifted to the right.
Here is where I am so far:

#include <iostream>
using namespace std;

/* use function to shift all characters one place to the right */
/* use a function to declare the characters of the fiqure */

int i, j;
int matrix([int i][int j]); //dont think this is right

Answer 1

first of all, you cannot declare the size of an array with a non-constant variable. this is unacceptable:

int i = 3;
int j = 3;
int Matrix[i][j]; //won't compile

but you can do:
const int M = 3;
const int N = 3;
int Matrix[M][N] //cimpiles just fine

if you really need variable matrix size (maybe the size is not known at compile time, only at runtime), then you should allot the array on the heap using malloc (you should study this along with pointers - useful topics to know).

Second, you should always start small. why not try to implement your algorithm with a simple one-dimensional array first, before trying multidimensional.

I could try the one for a simple array just to encourage you (will probably do that tomorrow).

Answer 2

I meant allocate not allot