Array of structs: dinamic allocation (.h)

#ifndef DINALLOC_H
#define DINALLOC_H
#define N 255

typedef char str[N];

typedef struct {
    str name;
    int cnt;
} hi;

int exist(hi*, int, str);
void loadHistogram(hi*, int&);
void printHistogram(hi*, int);

#endif // DINALLOC_H