/in/foo.cc: In function 'int main()':
/in/foo.cc:31:7: error: 'k' was not declared in this scope
   for(k = 0; k < i; k++)
       ^
/in/foo.cc:44:7: error: 'k' was not declared in this scope
   for(k = 0; k < i; k++)
       ^