Answer:
//The program prompts user to input three integers and it displays them, adds and gets their average
//begin
public class Test 
{ 
 public static void Main() 
 { 
 //input intergers
 int[] score = new int[3]; 
 int avg,rem,sum = 0; 
 
 for(int i=0;i<3;i++) 
 { 
 Console.WriteLine("Enter an integer score "); 
 score[i] = Convert.ToInt32(Console.ReadLine()); 
 sum = sum + score[i]; 
 } 
 avg = sum/3; 
 rem = sum%3; 
 
 Console.WriteLine("The average of "+score[0]+","+score[1]+","+score[2]+" is "+avg +" with a remainder of "+rem); 
 
 } 
}