/* Sample C header — samplefiles.com */
#ifndef SAMPLE_CUSTOMER_H
#define SAMPLE_CUSTOMER_H

#include <stddef.h>

#define VIP_THRESHOLD 10000.0

typedef struct {
    int id;
    const char *name;
    double balance;
} Customer;

int is_vip(const Customer *c);
double total_balance(const Customer *customers, size_t n);

#endif /* SAMPLE_CUSTOMER_H */