#include <iostream>
#include <uuid/uuid.h>
#include <pthread.h>

using namespace std;

void retrieveUuid(char *uuidValue);
struct BookStruct
{
    int BookId;
    char *BookName;
    char *BookTitle;
};

static int num=1;

struct BookStruct * retrieveArr();
void retrieveStructArr();

 
int main()
{
    retrieveStructArr();
    return 0;
}

void retrieveStructArr()
{ 
    struct BookStruct *p;
    p=retrieveArr();
    for(int i=0;i<100;i++)
    {
        printf("Index=%d,Id=%d,Name=%s,Title=%s\n",i,(p+i)->BookId,(p+i)->BookName,(p+i)->BookTitle);
        free((p+i)->BookName);
        
 
free((p+i)->BookTitle);
    } 
    printf("Finished in retrieveStructArr()!\n");    
}

struct BookStruct * retrieveArr()
{
    static struct BookStruct arr[100];
    for(int i=0;i<100;i++)
    {
         arr[i].BookId=num*num*num*num;
         ++num;
         arr[i].BookName=(char*)malloc(40);
         retrieveUuid(arr[i].BookName);
         arr[i].BookTitle
 
=(char*)malloc(40);
         retrieveUuid(arr[i].BookTitle);
    }
    struct BookStruct *structP;
    structP=&arr[0];
    return structP;
}

void retrieveUuid(char *uuidValue)
{
    uuid_t newUUID;
    uuid_generate(newUUID);
    uuid_unparse(newUUID, uuidValue);
}

Compile as below command

g++ -g -std=c++2a -I. h1.cpp -o h1 -luuid -lpthread