-int* resize_tab(int tab[], unsigned new_tab_size) {
- tab = realloc(tab, sizeof(int) * new_tab_size);
+int* resize_tab(int tab[], unsigned old_tab_size, unsigned new_tab_size) {
+ tab = (int*)realloc(tab, sizeof(int) * new_tab_size);
+ /* zero by default the added cells */
+ if (old_tab_size < new_tab_size) {
+ for (unsigned i = old_tab_size; i < new_tab_size; i++) {
+ tab[i] = 0;
+ }
+ }