foo.cc: In function 'int FindMaxNeg(int*, int)':
foo.cc:16:1: warning: 'max' may be used uninitialized in this function [-Wmaybe-uninitialized]
   16 | if(a[i]>max&&a[i]<0)
      | ^~
foo.cc: In function 'int main()':
foo.cc:16:1: warning: 'max' may be used uninitialized in this function [-Wmaybe-uninitialized]
   16 | if(a[i]>max&&a[i]<0)
      | ^~
foo.cc:5:5: note: 'max' was declared here
    5 | int max;
      |     ^~~
foo.cc:16:1: warning: 'max' may be used uninitialized in this function [-Wmaybe-uninitialized]
   16 | if(a[i]>max&&a[i]<0)
      | ^~
foo.cc:5:5: note: 'max' was declared here
    5 | int max;
      |     ^~~

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