Remove column of a 2D Array in C by overwriting its elements(shift another column)

Hey all! So I am watching online tutorials about C. I found an exercise which asked me to write a code in C which "removes" all rows of a matrix whose first element is divisible by 2. I came up with this.

Code:

---

                  for (i = 0 ; i < V ; i++) {  /*V = ''height'' of matrix*/
    if (matrica[i][0] % 2 == 0) {     
        for (k = i ; k < V - 1 ; k++) {
            for (j = 0 ; j < S ; j++) {    /* ''S'' width of matrix*/
                matrica[k][j] = matrica[k+1][j];
            }
        }
      i--;
      V--;
    }
}

---

So if I had a matrix that looked like this:

1 1 1
2 2 2
3 3 3
4 4 4

After using this code it would look like this:

1 1 1
3 3 3

However, I cannot seem to figure out if I can do something similar to this which works for columns. Can anyone help out?

And what about swapping the row and column indexes isn't working for you?