/in/foo.c: In function 'FindMaxNeg':
/in/foo.c:4:6: warning: variable 'm' set but not used [-Wunused-but-set-variable]
  int m,max; 
      ^
/in/foo.c:16:5: warning: 'max' may be used uninitialized in this function [-Wmaybe-uninitialized]
   if(a[i]>max&&a[i]<0)
     ^
/in/foo.c: In function 'main':
/in/foo.c:16:5: warning: 'max' may be used uninitialized in this function [-Wmaybe-uninitialized]
   if(a[i]>max&&a[i]<0)
     ^
/in/foo.c:4:8: note: 'max' was declared here
  int m,max; 
        ^~~
/in/foo.c:16:5: warning: 'max' may be used uninitialized in this function [-Wmaybe-uninitialized]
   if(a[i]>max&&a[i]<0)
     ^
/in/foo.c:4:8: note: 'max' was declared here
  int m,max; 
        ^~~