Eroare de compilare: user.cpp:8:23: error: narrowing conversion of ‘-1’ from ‘int’ to ‘unsigned int’ inside { } [-Wnarrowing] unsigned int a[23]={-1}; ^ user.cpp: In function ‘int main()’: user.cpp:13:14: warning: unused variable ‘nr’ [-Wunused-variable] unsigned n,nr,ct; ^ user.cpp:14:7: warning: unused variable ‘x’ [-Wunused-variable] int x,y; ^ user.cpp:14:9: warning: unused variable ‘y’ [-Wunused-variable] int x,y; ^