Compilare: user.cpp: In function ‘void parse(char*)’: user.cpp:61: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘int main()’: user.cpp:141: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result 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 ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:147: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘int toInt(char)’: user.cpp:32: warning: control reaches end of non-void function