Compilare: user.cpp: In function ‘void Read()’: user.cpp:17:9: warning: unused variable ‘i’ [-Wunused-variable] int i,m,x,y,cost; ^ user.cpp: In function ‘int BellmanFord()’: user.cpp:57:10: warning: unused variable ‘e’ [-Wunused-variable] edge e; ^ user.cpp: In function ‘void Read()’: user.cpp:19:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("traseu.in","r",stdin); ^ user.cpp:21:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ user.cpp:23:36: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d",&x,&y,&cost); ^ user.cpp: In function ‘void Write()’: user.cpp:115:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("traseu.out","w",stdout); ^