Compilare: user.cpp: In function ‘int main()’: user.cpp:48:23: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(p1==p2) ^ user.cpp:6:49: warning: unused variable ‘b1’ [-Wunused-variable] int x1,d1,n1,x2,d2,n2,y1,y2,m,v1,v2,nr1,nr2,b1,b2,maxim=-1,p1,p2,arie; ^ user.cpp:6:52: warning: unused variable ‘b2’ [-Wunused-variable] int x1,d1,n1,x2,d2,n2,y1,y2,m,v1,v2,nr1,nr2,b1,b2,maxim=-1,p1,p2,arie; ^ user.cpp:4:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("trapeze2.in","r",stdin); ^ user.cpp:5:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("trapeze2.out","w",stdout); ^ user.cpp:8:50: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d%d%d",&x1,&d1,&n1,&x2,&d2,&n2); ^