/in/foo.cc: In function 'int main()':
/in/foo.cc:11:21: warning: 'i' may be used uninitialized [-Wmaybe-uninitialized]
   11 |                 if(i%a==0&&i%10==a)
      |                    ~^~
/in/foo.cc:5:19: note: 'i' was declared here
    5 |         int a,b,n,i,cnt=0;
      |                   ^