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#include <stdio.h>
#include <stdlib.h>
struct st {
int len;
int items[];
};
int main()
{
int new_arr_len = 4;
struct st* mySt = (struct st*)malloc(sizeof(struct st) + new_arr_len * sizeof(mySt->items[0]));
mySt->len = new_arr_len;
for(int i = 0; i < new_arr_len; ++i)
mySt->items[i] = i + 5;
for(int i = 0; i < new_arr_len; ++i)
printf("%d\n", mySt->items[i]);
return 0;
}