Compilare: user.cpp: In function 'void back(long int)': user.cpp:33: warning: name lookup of 'i' changed user.cpp:3: warning: matches this 'i' under ISO standard rules user.cpp:18: warning: matches this 'i' under old rules user.cpp: In function 'int main()': user.cpp:58: warning: format '%d' expects type 'int*', but argument 2 has type 'long int*' user.cpp:58: warning: format '%d' expects type 'int*', but argument 3 has type 'long int*' user.cpp:63: warning: format '%d' expects type 'int*', but argument 2 has type 'long int*' user.cpp:63: warning: format '%d' expects type 'int*', but argument 3 has type 'long int*' user.cpp:75: warning: format '%d' expects type 'int', but argument 2 has type 'long int'