Multiple if statements in AWK

Shell Programming and Scripting
3

In awk the if block ends at the first semicolon or newline, unless it is enclosed by curly brackets.
Simply have one final print

  if ($2 == 1)sub($2,"Sunday")
  if ($2 == 2)sub($2,"Monday")
  print

You can make it little faster by putting an else before a subsequent if
An elegant method is a mapping array

BEGIN {
  split("Sunday Monday Tuesday ...", day)
  FS=OFS=","
}
{
  $2=day[$2]
  print
}

EDIT: OFS must be set because an assignment to a field causes a reformatting (re-split on OFS).
EDIT2: split() splits ob FS by default. I use a space, so FS should be set to comma after that!