/in/foo.cc: In function 'int main()':
/in/foo.cc:5:25: warning: unused variable 'fib' [-Wunused-variable]
    5 |         int a,b,c,d,feb,fib,x,re;
      |                         ^~~
/in/foo.cc:16:11: warning: 'd' may be used uninitialized [-Wmaybe-uninitialized]
   16 |         re=b/d;
      |         ~~^~~~
/in/foo.cc:5:19: note: 'd' was declared here
    5 |         int a,b,c,d,feb,fib,x,re;
      |                   ^