Methods C Sharp

Question

I am getting error " Not all code paths return a value" with this code? pls help.

 

static void Main(string[] args)

{

Console.WriteLine("Enter the lenth of Array");

int length = int.Parse(Console.ReadLine());

int[] array = new int[length];

for (int i = 0; i <= array.Length - 1; i++)

{

Console.WriteLine("Enter {0} element" ,i);

array[i] = int.Parse(Console.ReadLine());

}

Console.WriteLine("Enter the element");

int element = int.Parse(Console.ReadLine());

Positionoffirst(element, array);

Console.WriteLine(Positionoffirst(element,array));

}

static int Positionoffirst(int element, int[] array)

{

for (int i = 0; i <= array.Length-1; i++)

{

if (array[i]==element)

{

if (array[i]>array[i-1] && array[i]>array[i+1])

{

return 1;

}

}

else

{

return -1;

}

}