checks.awk

# check1 - print total deposits and checks
/~check/ { ck = 1; next }
/~deposit/ { dep = 1; next }
/~amount/ { amt = $2; next }
/~$/ { addup() }
END { 
  addup()
  printf("deposits $%.2f, checks $%.2f'n", deposits, checks)
}
function addup() {
  if (ck)
    checks += amt
  else if (dep)
    deposits += amt
  ck = dep = amt = 0
}