Compilare: In file included from /usr/include/string.h:642:0, from /usr/include/c++/4.8/cstring:42, from user.cpp:3: In function ‘char* strcat(char*, const char*)’, inlined from ‘int main()’ at user.cpp:23:34: /usr/include/i386-linux-gnu/bits/string3.h:144:63: warning: call to char* __builtin___strcat_chk(char*, const char*, unsigned int) will always overflow destination buffer [enabled by default] return __builtin___strcat_chk (__dest, __src, __bos (__dest)); ^