Compilare: user.cpp:78:2: warning: no newline at end of file user.cpp: In function 'int main()': user.cpp:23: warning: format '%s' expects type 'char*', but argument 3 has type 'char (*)[2000100]' user.cpp:27: warning: array subscript has type 'char' user.cpp:28: warning: array subscript has type 'char' user.cpp: In function 'int swap(int, int)': user.cpp:16: warning: control reaches end of non-void function