Switch as else if in Julia

In Julia, the switch statement is not available. However, you can achieve similar functionality using if-elseif-else statements. Here's an example:

function check_grade(grade::Int64)
    if grade >= 90
        println("A")
    elseif grade >= 80
        println("B")
    elseif grade >= 70
        println("C")
    else
        println("D or lower")
    end
end
check_grade(95) # Output: A

check_grade(78) # Output: C

check_grade(65) # Output: D or lower

In this example, the check_grade function takes an integer argument grade and checks if it is greater than or equal to 90, 80, and 70. If it passes any of these conditions, it will return the respective grade letter. If it fails all conditions, it will return "D or lower". This is the equivalent of a switch statement with several case conditions in other languages.

Alternatively, you could use a Dict object to simulate a switch-like statement as shown below:

function check_grade(grade::Int64)
    grades_dict = Dict(90=>"A", 80=>"B", 70=>"C")
    if haskey(grades_dict, grade)
        println(grades_dict[grade])
    else
        println("D or lower")
    end
end
check_grade(92) # Output: A

check_grade(78) # Output: C

check_grade(65) # Output: D or lower

In this example, the check_grade function takes an integer argument grade and checks if it exists in the grades_dict. If it is found in the dictionary, it will return the respective grade letter. If it is not found, it will return "D or lower".