Compilare: user.cpp: In function ‘void write_data()’: user.cpp:99: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp:95: warning: unused variable ‘j’ user.cpp: In function ‘void urm(int&, int&, int&, char)’: user.cpp:124: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp:130: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp:136: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp:142: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp:148: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp:154: warning: suggest explicit braces to avoid ambiguous ‘else’