حلي للسؤال الاول:
كود PHP:
import java.util.*;
/
*
* @author deathpa1N
*/
public class Exam {
public static void main(String[] args) {
int num,sum=0,avg,c=0;
Scanner input=new Scanner(System.in);
while (true){
System.out.print("\nEnter a number between 50 and 100 (Enter -1 to Exit): ");
num = input.nextInt();
if (num>=50 && num<=100){
sum=sum+num;
c++;}
if (num==(-1)){
avg=sum/c;
System.out.println("The Sum is: "+sum+" and The Average is: "+avg);
System.exit(0);}}