/in/foo.cc: In function 'int main()':
/in/foo.cc:16:5: error: 'y' was not declared in this scope
   c=y; 
     ^
/in/foo.cc:18:16: error: 'y' was not declared in this scope
  printf("%d\n",y)
                ^
/in/foo.cc:8:12: warning: unused variable 'd' [-Wunused-variable]
  int a,b,c,d,e,f,i;
            ^