Matrix in C

#include <stdio.h>

void f(int w, int h, void *m)
{
    int (*v)[h] = (int (*)[h]) m;

    int i;
    for(i=0; i<w; i++)
    {
        for(int j=0; j<h; j++)
        {
            printf("m[%d][%d] = %d\n",i,j,v[i][j]);
        }
    }
}

int main()
{
    int m[2][2];

    m[0][0] = 5;
    m[0][1] = 7;
    m[1][0] = 34;
    m[1][1] = 12;

    f(2, 2, m);
}