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  scu09156146  commented on April 26, 2024, 2:00 p.m. ← edited →

  題解

  import java.util.Scanner;
  
  public class SquareArea {
  
      public static void main(String[] args) {
          Scanner input = new Scanner(System.in);
          int n = input.nextInt();
          input.close();
          // 呼叫副程式，印出回傳值
          System.out.print(area(n));
      }
  
      public static int area(int n) {
          return n * n; // 正方形面積公式
      }
  
  }