/in/foo.cc: In function 'int main()':
/in/foo.cc:4:21: warning: unused variable 'h' [-Wunused-variable]
    4 |  {int a,b,c,d,e,f,g,h,i;
      |                     ^
/in/foo.cc:4:23: warning: unused variable 'i' [-Wunused-variable]
    4 |  {int a,b,c,d,e,f,g,h,i;
      |                       ^