Compilare: user.cpp: In function ‘int main()’: user.cpp:7:27: warning: unused variable ‘lg’ [-Wunused-variable] int c,x,n,a,b,y,i,nr=0,nm,lg=0,xx,maxx=0,s; ^ user.cpp:7:32: warning: unused variable ‘xx’ [-Wunused-variable] int c,x,n,a,b,y,i,nr=0,nm,lg=0,xx,maxx=0,s; ^ user.cpp:49:1: warning: ‘nm’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(nm>maxx)maxx=nm; ^