Compilare: user.cpp: In function ‘int comp(punct, punct)’: user.cpp:20:33: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] return (A.y<B.y || A.y==B.y && A.x<B.x); ^ user.cpp: In function ‘void acoperire()’: user.cpp:61:12: warning: unused variable ‘u’ [-Wunused-variable] double u,umin,aa,bb,cc; ^ user.cpp:61:14: warning: unused variable ‘umin’ [-Wunused-variable] double u,umin,aa,bb,cc; ^ user.cpp:61:19: warning: unused variable ‘aa’ [-Wunused-variable] double u,umin,aa,bb,cc; ^ user.cpp:61:22: warning: unused variable ‘bb’ [-Wunused-variable] double u,umin,aa,bb,cc; ^ user.cpp:61:25: warning: unused variable ‘cc’ [-Wunused-variable] double u,umin,aa,bb,cc; ^