Julia Program to print first n prime numbers

Program

function prime(num)    
    isPrime = true
        for i in 2:convert(Int64, round(num/2, digits = 0))
            if num % i == 0
                isPrime = false
                break
            end
        end
    return isPrime
end
print("Enter the value of n: ")
n = parse(Int, readline(stdin))
for i in 2:n
    isPrime = prime(i)
        if isPrime == true 
            println(i)
        end  
end

Output

$ julia print-n-prime-numbers.jl
Enter the value of n: 15
2
3
5
7
11
13