Compilare: user.cpp: In function ‘void read()’: user.cpp:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘bool verif_fasie(int, int, int)’: user.cpp:130: warning: comparison between signed and unsigned integer expressions user.cpp:136: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘bool verif_linie(int, int, int)’: user.cpp:146: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘void solve()’: user.cpp:159: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘int main()’: user.cpp:174: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:175: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result