foo.cc: In function ‘int main()’:
foo.cc:8:21: warning: ‘i’ is used uninitialized [-Wuninitialized]
    8 |                 if(n%i==0)
      |                    ~^~
foo.cc:5:15: note: ‘i’ was declared here
    5 |         int n,i,cnt=0;
      |               ^