/in/foo.c: In function 'FindMaxNeg':
/in/foo.c:17:15: warning: operation on 'j' may be undefined [-Wsequence-point]
    if(b[j]>b[j=1])
              ~^~
/in/foo.c:14:2: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
  for(i=0;i<m-1;i++)
  ^~~
/in/foo.c:24:3: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
   return b[m-1];
   ^~~~~~