Compilare: user.cpp: In function ‘int main()’: user.cpp:127:39: warning: unused variable ‘mijx’ [-Wunused-variable] long long x0,y0,x1,y1,x2,y2,x3,y3,mijx,mijy,dx,dy; ^ user.cpp:127:44: warning: unused variable ‘mijy’ [-Wunused-variable] long long x0,y0,x1,y1,x2,y2,x3,y3,mijx,mijy,dx,dy; ^ user.cpp:127:49: warning: unused variable ‘dx’ [-Wunused-variable] long long x0,y0,x1,y1,x2,y2,x3,y3,mijx,mijy,dx,dy; ^ user.cpp:127:52: warning: unused variable ‘dy’ [-Wunused-variable] long long x0,y0,x1,y1,x2,y2,x3,y3,mijx,mijy,dx,dy; ^ user.cpp: In function ‘void READ()’: user.cpp:28:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:29:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%c",&ch); ^ user.cpp:33:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s",sir); ^ user.cpp:48:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s",sir); ^ user.cpp: In function ‘int main()’: user.cpp:130:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("patrate3.in","r",stdin); ^ user.cpp:131:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("patrate3.out","w",stdout); ^