Compilare: user.cpp: In function ‘bool p(int)’: user.cpp:18:9: warning: ‘nr’ may be used uninitialized in this function [-Wmaybe-uninitialized] nr++; ^ user.cpp: In function ‘int main()’: user.cpp:18:9: warning: ‘nr’ may be used uninitialized in this function [-Wmaybe-uninitialized] user.cpp:12:16: note: ‘nr’ was declared here int i,cc=c,nr; ^