/in/foo.c: In function 'FindMaxNeg':
/in/foo.c:4:12: warning: 'index' may be used uninitialized in this function [-Wmaybe-uninitialized]
  int max,j,index;
            ^~~~~
/in/foo.c:16:5: warning: 'max' may be used uninitialized in this function [-Wmaybe-uninitialized]
   if(array[j]>max&&array[j]<0)
     ^