how can I write code like this

[andrew310876]

...
leadership <- within(leadership,{
agecat <- NA
agecat[age > 75] <- "Elder"
agecat[age >= 55 & age <= 75] <- "Middle Aged"
agecat[age < 55] <- "Young" })
...
how can I write code like this,different conditions are in different lines.
When I try to inmitate the code above
leadership <- within(leadership,{agecat <- NA})
,then What can I do,I can not input space or comma(because both ways are wrong)

[GreyMerchant]

Hello

Happy to help if you can post some example data and the expected output you want!