Compilare: user.cpp: In function ‘bool divide(long int, long int)’: user.cpp:82: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp: In function ‘int solve()’: user.cpp:122: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp: In function ‘int main()’: user.cpp:142: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:143: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:144: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:146: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result