/in/foo.c: In function 'FindMaxNeg':
/in/foo.c:22:2: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
  for(i=0;i<n;i++)
  ^~~
/in/foo.c:28:3: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
   s=b[0];
   ^
/in/foo.c:28:4: warning: 'b[0]' may be used uninitialized in this function [-Wmaybe-uninitialized]
   s=b[0];
   ~^~~~~