foo.cc: In function 'int FindMin(int*, int)':
foo.cc:16:16: warning: 'k' may be used uninitialized [-Wmaybe-uninitialized]
   16 |         return k;
      |                ^
foo.cc:6:22: note: 'k' was declared here
    6 |         int max=a[0],k;
      |                      ^
foo.cc: In function 'int main()':
foo.cc:27:15: warning: 'k' may be used uninitialized [-Wmaybe-uninitialized]
   27 |         cout<<k;
      |               ^
foo.cc:6:22: note: 'k' was declared here
    6 |         int max=a[0],k;
      |                      ^