/in/foo.cc: In function 'node* searchremove(node*, node*, int)':
/in/foo.cc:44:10: warning: statement has no effect [-Wunused-value]
  for (srp; srp != NULL; presrp = srp, srp = srp->next)
          ^
/in/foo.cc: In function 'int main()':
/in/foo.cc:77:9: warning: statement has no effect [-Wunused-value]
  for (p1; p1 < a1 + n1; p1++)
         ^
/in/foo.cc:79:9: warning: statement has no effect [-Wunused-value]
  for (p2; p2 < a2 + n2; p2++)
         ^