What is the easiest way to dynamically allocate memory for 2d array?

Question

I am curious how the best programmers in the world allocate memory for a 2d array. Any tips and advice will be much appreciated.

PS I am just a student trying to learn.

https://stackoverflow.com/questions/917783/how-do-i-work-with-dynamic-multi-dimensional-arrays-in-c — Renat, Nov 09 '22 at 18:46
Funny as accepted answer is not about multi dimensional arrays only arrays of pointers :) — 0___________, Nov 09 '22 at 18:56
Is the number of columns per row fixed at compile-time or does this value also have to be dynamic? — Andreas Wenzel, Nov 09 '22 at 18:56

score 3 · Accepted Answer · answered Nov 09 '22 at 18:54

3

Use array pointers

{
    size_t rows = 10;
    size_t cols = 50;

    int (*array)[cols] = malloc(rows * sizeof(*array));

    /* ... */

    free(array);
}

answered Nov 09 '22 at 18:54

0___________

IMO, "how the best programmers in the world allocate memory ..." deserves an allocation success check. – chux - Reinstate Monica Nov 09 '22 at 22:27
@chux-ReinstateMonica it is in `/* ... */` – 0___________ Nov 09 '22 at 22:40

1 Answers1