Compilare: user.cpp: In function ‘int main()’: user.cpp:16:32: warning: unused variable ‘nr2’ [-Wunused-variable] int n,x,y,suma=0,nr=0,nr1=0,nr2=0,nr3=0,nr4=0,e,x1,y1; ^ user.cpp:16:38: warning: unused variable ‘nr3’ [-Wunused-variable] int n,x,y,suma=0,nr=0,nr1=0,nr2=0,nr3=0,nr4=0,e,x1,y1; ^ user.cpp:16:44: warning: unused variable ‘nr4’ [-Wunused-variable] int n,x,y,suma=0,nr=0,nr1=0,nr2=0,nr3=0,nr4=0,e,x1,y1; ^