Compilare: user.cpp: In function ‘int main()’: user.cpp:23:28: warning: variable ‘a’ set but not used [-Wunused-but-set-variable] int p,x=5,y=2000000000,a=nrzero(x),b,c=nrzero(y),gasit=0,mij; ^ user.cpp:23:42: warning: variable ‘c’ set but not used [-Wunused-but-set-variable] int p,x=5,y=2000000000,a=nrzero(x),b,c=nrzero(y),gasit=0,mij; ^