Compilare: user.cpp: In function ‘int main()’: user.cpp:21:29: warning: variable ‘poz1’ set but not used [-Wunused-but-set-variable] int n,m,T,i,j,k,s,a,b,c,poz1,poz2,val1,val2; ^ user.cpp:21:34: warning: variable ‘poz2’ set but not used [-Wunused-but-set-variable] int n,m,T,i,j,k,s,a,b,c,poz1,poz2,val1,val2; ^ user.cpp:18:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("coach.in","r",stdin); ^ user.cpp:19:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("coach.out","w",stdout); ^ user.cpp:22:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d",&n,&m,&T); ^ user.cpp:24:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&v[i].val); ^ user.cpp:33:33: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d",&a,&b,&c); ^