}
inline char file_to_char(File f) {
- return char(f - FILE_A) + 'a';
+ return char(f - FILE_A + int('a'));
}
inline Rank rank_from_char(char c) {
}
inline char rank_to_char(Rank r) {
- return char(r - RANK_1) + '1';
+ return char(r - RANK_1 + int('1'));
}
inline Square square_from_string(const std::string& str) {