public static void Main()
int std = 0 , classs = 0, sum = 0;
Console.WriteLine("how many students in class");
classs = int.Parse(Console.ReadLine());
for(int i = 0; i < classs ; i++)
Console.WriteLine("enter grades");
std = int.Parse(Console.ReadLine());
Console.WriteLine(sum / classs);
public static int CalcAvg(int x)
s = int.Parse(Console.ReadLine());
y = int.Parse(Console.ReadLine());
z = int.Parse(Console.ReadLine());