# What is the problem with: the condition has length > 1 and only the first element will be used?

newbie to r. i have:

> > age <- function(Age) {
> +     else if(15<=Age&&Age<=50) answer<-"15 to 50"
> + }
> > titanic_3 <- titanic %>%
> +     select(Survived, Pclass, Age, Sex) %>%
> +     filter(!is.na(Age)) %>%
> +     mutate(agecat=age(Age)) Warning message: In if (Age < 15) answer <- "under 15" else if (15 <= Age && Age <=  :   the condition has
> length > 1 and only the first element will be used
> >


if i use one & instead of &&, i get two warnings. i know that one of these is because of the shortcut thing.

how do i write this function so as to get rid of the warning message?

thanks

edit: i tried:

age <- function(Age) {
}


and got even more warnings:

Warning messages:
1: In if (Age < 15) answer <- "under 15" else if (Age <= 50) answer <- "15 to 50" else answer <- "over 50" :
the condition has length > 1 and only the first element will be used
2: In if (Age <= 50) answer <- "15 to 50" else answer <- "over 50" :
the condition has length > 1 and only the first element will be used


this one seems to work, but they want us to use cut.

age2 <- function(Age) {
ifelse(Age<15,"under 15",ifelse(Age<=50,"15 to 50","over 50"))
}


age <- function(Age){