/in/foo.cc: In function 'int main()':
/in/foo.cc:15:23: error: 'a' was not declared in this scope
   15 |                 while(a%5==0)
      |                       ^
/in/foo.cc:19:23: error: 'a' was not declared in this scope
   19 |                 while(a%3==0)
      |                       ^
/in/foo.cc:10:21: warning: unused variable 'xt' [-Wunused-variable]
   10 |                 int xt=x;
      |                     ^~