Compilare: user.cpp: In function ‘void back2(char*, char*)’: user.cpp:36:35: warning: deprecated conversion from string constant to ‘char*’ [-Wwrite-strings] back2( "C", p + 7 ); ^ user.cpp:44:36: warning: deprecated conversion from string constant to ‘char*’ [-Wwrite-strings] back2( "BC", p + 1 ); ^ user.cpp: In function ‘void solve()’: user.cpp:66:23: warning: deprecated conversion from string constant to ‘char*’ [-Wwrite-strings] back2( "A", p ); ^ user.cpp:70:27: warning: deprecated conversion from string constant to ‘char*’ [-Wwrite-strings] back2( "B", p ); ^ user.cpp:73:31: warning: deprecated conversion from string constant to ‘char*’ [-Wwrite-strings] back2( "C", p ); ^ user.cpp:57:20: warning: ‘p’ is used uninitialized in this function [-Wuninitialized] in.getline(p,1); ^