[C] Allocate 2D Array

2dArray.c

int ** int2dArray(int row, int col) {
    int i, **ret = (int **) malloc(sizeof(int *) * row + sizeof(int) * row * col);

    for (i = 1, ret[0] = (int *)(ret + row); i < row; ++i) {
        ret[i] = ret[i-1] + col;
    }

    return ret;
}