/in/foo.cc: In function 'int main()':
/in/foo.cc:25:20: warning: 'b' may be used uninitialized [-Wmaybe-uninitialized]
   25 |         cout<<b-1<<" "<<v;
      |                    ^~~
/in/foo.cc:6:19: note: 'b' was declared here
    6 |         int a,c,v,b;
      |                   ^
/in/foo.cc:16:9: warning: 'v' may be used uninitialized [-Wmaybe-uninitialized]
   16 |         if(v==0)
      |         ^~
/in/foo.cc:6:17: note: 'v' was declared here
    6 |         int a,c,v,b;
      |                 ^