#include <stdio.h>
#include <stdlib.h>
typedef struct
{
    char value;
} a;

typedef struct
{
    a **vvalue;
} b;

int main(int argc, char const *argv[])
{
    b *t = malloc(sizeof(b));
    t->vvalue = malloc(sizeof(a *) * 2);
    t->vvalue[0] = malloc(sizeof(a));
    t->vvalue[1] = malloc(sizeof(a));
    t->vvalue[0]->value = 'a';
    t->vvalue[1]->value = 'b';
    printf("%s%c%c", "\n", t->vvalue[0]->value, t->vvalue[1]->value);
    return 0;
}