Compilare: user.cpp: In function ‘int main()’: user.cpp:40:20: warning: unused variable ‘j’ [-Wunused-variable] register int i,j,p,u,mid; ^ user.cpp:41:15: warning: unused variable ‘nr’ [-Wunused-variable] int x1,x2,nr=0,x; ^ user.cpp:41:20: warning: unused variable ‘x’ [-Wunused-variable] int x1,x2,nr=0,x; ^ user.cpp:60:10: warning: ‘x2’ may be used uninitialized in this function [-Wmaybe-uninitialized] else if(k==x2) ^ user.cpp:63:14: warning: ‘x1’ may be used uninitialized in this function [-Wmaybe-uninitialized] k-=x1; ^ user.cpp:40:26: warning: ‘mid’ may be used uninitialized in this function [-Wmaybe-uninitialized] register int i,j,p,u,mid; ^