Eroare de compilare: user.cpp:13:8: error: ‘int index’ redeclared as different kind of symbol int N, index, ok; ^ In file included from /usr/include/c++/4.8/cstring:42:0, from user.cpp:5: /usr/include/string.h:482:1: error: previous declaration of ‘const char* index(const char*, int)’ index (__const char *__s, int __c) __THROW ^ 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 ); ^