Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:9: warning: format ‘%s’ expects type ‘char*’, but argument 3 has type ‘char (*)[400001]’ user.cpp:14: error: ‘strrev’ was not declared in this scope user.cpp:8: warning: unused variable ‘t’ user.cpp:8: warning: unused variable ‘k’ user.cpp:9: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result