foo.c: In function 'FindMaxNeg':
foo.c:4:13: warning: unused variable 'ii' [-Wunused-variable]
    4 |         int ii,max,i,k=0;
      |             ^~
foo.c:19:16: warning: 'max' may be used uninitialized [-Wmaybe-uninitialized]
   19 |         return max;
      |                ^~~
foo.c:4:16: note: 'max' was declared here
    4 |         int ii,max,i,k=0;
      |                ^~~

[Hydro](https://hydro.ac)提供评测服务