Compilare: user.cpp: In function ‘int cmp2(punct, punct)’: user.cpp:29:8: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if (deasupra(a[1],A,B)==0 && B.y==A.y) ^ user.cpp:35:8: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if (deasupra(a[1],A,B)==0 && B.x==A.x) ^ user.cpp: In function ‘int cmp(punct, punct)’: user.cpp:64:1: warning: control reaches end of non-void function [-Wreturn-type] } ^