Templated Inline

templated_array.c

#include <stddef.h>
#include <stdio.h>

template<size_t x, size_t y>
void doSomething2(double (&arr)[x][y])
{
    for (int i = 0; i < x; i++)
        for (int j = 0; j < y; j++)
            arr[i][j] = i * x + j;
}

int main()
{
    double arr2[10][10][10];

    doSomething2(arr2[0]);
}

triple_pointer.c

#include <stddef.h>
#include <stdio.h>

int x = 10;
int y = 10;

void doSomething(double** arr) //arr[10][10]
{
    for (int i = 0; i < x; i++)
        for (int j = 0; j < y; j++)
            arr[i][j] = i * x + j;
}

int main()
{
    double*** arr = new double**[10];
    for(int i = 0; i<10;i++)
    {
        arr[i] = new double*[10];
        for(int j=0; j<10; j++)
            arr[i][j] = new double[10];
    }

    doSomething(arr[0]);
}