Compilare: user.cpp: In function 'int main()': user.cpp:16: warning: format '%s' expects type 'char*', but argument 2 has type 'char (*)[2000005]' user.cpp:16: warning: format '%s' expects type 'char*', but argument 3 has type 'char (*)[2000005]' user.cpp:53: warning: format '%ld' expects type 'long int', but argument 2 has type 'int' user.cpp:57: warning: format '%ld' expects type 'long int', but argument 2 has type 'int' user.cpp:18: warning: unused variable 'j' user.cpp:18: warning: unused variable 'k'