Compilare: user.cpp: In function ‘bool SolveExpression()’: user.cpp:62:6: warning: unused variable ‘QueuePosition’ [-Wunused-variable] int QueuePosition=1; ^ user.cpp: In function ‘int main()’: user.cpp:79:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("bool.in","r",stdin); ^ user.cpp:80:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("bool.out","w",stdout); ^ user.cpp:81:38: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(File,1,Max_File_Size,stdin); ^