Compilare: user.cpp: In function ‘int main()’: user.cpp:11:20: warning: unused variable ‘s1’ [-Wunused-variable] int n,s=0,sm=0,s1=0,i=1,x,a,b,am,bm; ^ user.cpp:11:35: warning: variable ‘am’ set but not used [-Wunused-but-set-variable] int n,s=0,sm=0,s1=0,i=1,x,a,b,am,bm; ^ user.cpp:11:38: warning: variable ‘bm’ set but not used [-Wunused-but-set-variable] int n,s=0,sm=0,s1=0,i=1,x,a,b,am,bm; ^ user.cpp:28:29: warning: ‘b’ may be used uninitialized in this function [-Wmaybe-uninitialized] fout<<sm<<" "<<a<<" "<<b; ^ user.cpp:28:20: warning: ‘a’ may be used uninitialized in this function [-Wmaybe-uninitialized] fout<<sm<<" "<<a<<" "<<b; ^