Compilare: user.cpp: In function ‘int main()’: user.cpp:113: warning: suggest parentheses around ‘+’ inside ‘>>’ user.cpp:167: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp:110: warning: unused variable ‘nr’ user.cpp:131: warning: ‘summin’ may be used uninitialized in this function user.cpp:132: warning: ‘l’ may be used uninitialized in this function user.cpp:132: warning: ‘c’ may be used uninitialized in this function