sum and average calculation using method mark_cnt()

Question

 

output add 3 subject scores and average scores of 3 subjects 

 

parameters in mark_cnt() method must include keyword out

 

edit my code below

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public static void Main()

{

Console.WriteLine("enter biology score");

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

Console.WriteLine("enter english score");

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

Console.WriteLine("enter math score");

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

mark_cnt(out biology, out english, out math);

}

public static void mark_cnt(out int k, out int e, out int m)

{

int sum;

int avg;

sum = k + e + m;

avg = k + e + m / 3;

}