Swift Program to print Fibonacci Series for first n natural numbers

Program

#!/usr/bin/swift
func fibonacci(_ n: Int) -> Int{
    if n <= 2{
        return 1
    }
    else{
    return fibonacci(n-1) + fibonacci(n - 2)
    }
}
print("nth fibonacci number:",fibonacci(6))

Output

$ swiftc fibonacci.swift
$ ./fibonacci
nth fibonacci number: 8