Compilare: user.cpp: In function ‘void palind()’: user.cpp:16:10: warning: variable ‘exp’ set but not used [-Wunused-but-set-variable] bool exp; ^ user.cpp: In function ‘int main()’: user.cpp:45:18: warning: format ‘%s’ expects argument of type ‘char*’, but argument 2 has type ‘char (*)[1000002]’ [-Wformat=] scanf("%s",&a); ^ user.cpp:43:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("pscpld.in","r",stdin); ^ user.cpp:44:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("pscpld.out","w",stdout); ^ user.cpp:45:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s",&a); ^