Compilare: user.cpp: In function ‘int main()’: user.cpp:145:9: warning: unused variable ‘nr1’ [-Wunused-variable] int nr1,nr2; ^ user.cpp:145:13: warning: unused variable ‘nr2’ [-Wunused-variable] int nr1,nr2; ^ user.cpp:128:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("radiatie.in","r",stdin); ^ user.cpp:129:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("radiatie.out","w",stdout); ^ user.cpp:130:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d",&n,&m,&p); ^ user.cpp:131:71: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for(int i=1;i<=m;i++) scanf("%d%d%d",&s[i].n1,&s[i].n2,&s[i].cost); ^ user.cpp:166:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&nod1,&nod2); ^