莊俊祥w3schools,Jave雙迴圈,int整數,String字串,+串接,運算子operator

Java程式碼

/*莊俊祥2022/10/17w3school學雙迴圈,運算子Operator,運算元Operand*/
public class Main {
  public static void main(String[] args) {  
    int i, j;                    /*宣告整數integer變數i, j*/    
    String a="第", b="列:";       /*宣告整數字串a, b給初始直*/
    for ( i = 0; i <= 8; i++) { /*迴圈*/
      System.out.println(a + i + b);/*+運算子用在字串,串接功能*/
    for ( j = 0; j <= i; j++)   /*迴圈內僅有一道指令,可以不加{...}*/
       System.out.print(j);     /*print輸出完,下一個print在後面,*/
    System.out.println();       /*printIn輸出完換列line,()的空,只有換列*/
    
    
    }  
  }
}