foo.cc: In function ‘int main()’:
foo.cc:22:31: warning: ‘tmp’ may be used uninitialized [-Wmaybe-uninitialized]
   22 |         ans=(a/tmp)*(b/tmp)*(c/tmp);
      |                             ~~^~~~~
foo.cc:14:19: note: ‘tmp’ was declared here
   14 |         int a,b,c,tmp,ans;
      |                   ^~~