Compilare: user.cpp: In function ‘int main()’: user.cpp:7:13: warning: variable ‘a’ set but not used [-Wunused-but-set-variable] int x,y,a,b,nr,c,d,s1,s2; ^ user.cpp:7:15: warning: variable ‘b’ set but not used [-Wunused-but-set-variable] int x,y,a,b,nr,c,d,s1,s2; ^ user.cpp:7:17: warning: variable ‘nr’ set but not used [-Wunused-but-set-variable] int x,y,a,b,nr,c,d,s1,s2; ^ user.cpp:7:20: warning: variable ‘c’ set but not used [-Wunused-but-set-variable] int x,y,a,b,nr,c,d,s1,s2; ^ user.cpp:7:22: warning: variable ‘d’ set but not used [-Wunused-but-set-variable] int x,y,a,b,nr,c,d,s1,s2; ^ user.cpp:7:24: warning: variable ‘s1’ set but not used [-Wunused-but-set-variable] int x,y,a,b,nr,c,d,s1,s2; ^ user.cpp:7:27: warning: variable ‘s2’ set but not used [-Wunused-but-set-variable] int x,y,a,b,nr,c,d,s1,s2; ^