Compilare: user.cpp: In function ‘int main()’: user.cpp:15:7: warning: unused variable ‘catec’ [-Wunused-variable] int i,catec=0,cated=0,j,n,pp=0,z=0,z2=0,max=-1; ^ user.cpp:15:15: warning: unused variable ‘cated’ [-Wunused-variable] int i,catec=0,cated=0,j,n,pp=0,z=0,z2=0,max=-1; ^ user.cpp:15:27: warning: unused variable ‘pp’ [-Wunused-variable] int i,catec=0,cated=0,j,n,pp=0,z=0,z2=0,max=-1; ^ user.cpp:15:32: warning: unused variable ‘z’ [-Wunused-variable] int i,catec=0,cated=0,j,n,pp=0,z=0,z2=0,max=-1; ^ user.cpp:15:36: warning: unused variable ‘z2’ [-Wunused-variable] int i,catec=0,cated=0,j,n,pp=0,z=0,z2=0,max=-1; ^ user.cpp:26:14: warning: variable ‘poz’ set but not used [-Wunused-but-set-variable] int max2=-1, poz; ^ user.cpp:39:14: warning: variable ‘poz2’ set but not used [-Wunused-but-set-variable] int max3=-1, poz2,max4=-1,maxs=-1,s=0; ^ user.cpp:12:31: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("euro2.in","r",stdin); ^ user.cpp:13:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("euro2.out","w",stdout); ^ user.cpp:17:16: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d",&n); ^ user.cpp:20:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%f",&v[i]); ^