// pins.h
#ifndef PINS_H
#define PINS_H

#ifdef __cplusplus
extern "C" {
#endif

// Returns ID (1..100) corresponding to a 4-char PIN string, or 0 if no match.
// Pass C string like "1234".
int findIdByPin(const char* pin);

#ifdef __cplusplus
}
#endif

#endif // PINS_H