/in/foo.cc: In function 'void cut_cout(int*)':
/in/foo.cc:7:15: warning: 'n' is used uninitialized in this function [-Wuninitialized]
  for(int i=1;i<=n;i++)
              ~^~~
/in/foo.cc:22:18: warning: 'c' may be used uninitialized in this function [-Wmaybe-uninitialized]
  for(int i=1;i<=n-c;i++)
                 ~^~
/in/foo.cc:20:15: warning: 'x' may be used uninitialized in this function [-Wmaybe-uninitialized]
    b[++x]=a[i];
               ^