c99_table.c

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

typedef struct {
  int a;
  int b;
} MyLine;

typedef struct {
  MyLine const *firstElement;
  size_t dim_y;
  size_t dim_x;
} MyTable;

typedef MyTable const *MyTableConstPtr;

#define MyTableConstr(d)                                                       \
  {                                                                            \
    .firstElement = &d[0][0], .dim_y = sizeof(d) / sizeof(d[0]),               \
    .dim_x = sizeof(d[0]) / sizeof(d[0][0])                                    \
  }

static void printFun(MyTableConstPtr table) {
  printf("Dim x = %lu, Dim y = %lu\n\n", table->dim_y, table->dim_x);
  for (size_t cnt = 0; cnt < table->dim_x * table->dim_y; cnt++) {
    printf("%d, %d\n", table->firstElement[cnt].a,
           table->firstElement[cnt].b);
  }
}

int main(void) {
  static MyLine const myData1[][2] = {
      {{0, 1}, {2, 3}}, {{4, 5}, {6, 7}}, {{8, 9}, {10, 11}}};
  MyTable const myTable1 = MyTableConstr(myData1);

  static MyLine const myData2[][3] = {{{0, 1}, {2, 3}, {4, 5}},
                                      {{6, 7}, {8, 9}, {10, 11}},
                                      {{12, 13}, {14, 15}, {16, 17}}};
  MyTable const myTable2 = MyTableConstr(myData2);

  printFun(&myTable1);
  printf("--\n");
  printFun(&myTable2);

  return 0;
}