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exercism-cpp / luhn / luhn.h
@Wook Song Wook Song on 29 Oct 2022 140 bytes Easy: Add a solution for "Luhn"
#if !defined(LUHN_H)
#define LUHN_H

#include <string>

namespace luhn {
bool valid(std::string s);
}  // namespace luhn

#endif  // LUHN_H