練習（5）：（1）修改前乙個練習，將dataonly中的資料在main()方法中賦值並列印出來。
public class dataonlytest
dataonly data = new dataonly();
data.i = 47;
data.d = 1.1;
data.b = false;
system.out.println("data.i = "+data.i);
system.out.println("data.d = "+data.d);
system.out.println("data.b = "+data.b);
}}
問題：不明白為什麼在main（）主函式中定義類呢？按照物件導向的思想，這樣豈不是很不合理？
方法二：
public class dataonlytest
} dataonly data = new dataonly();
data.i = 47;
data.d = 1.1;
data.b = false;
data.show();
}}
練習2 11 練習2 20
1.練習2.11 define mul interval x y let x1 lower bound x x2 upper bound x y1 lower bound y y2 upper bound y let zzx and x1 0 x2 0 zzy and y1 0 y2 0 fzx a...
python學習練習
1.猜數字遊戲 d python coding utf 8 2019 4 14 10 29 n 1tuichu 1 import random print 20,讓我們一起來玩遊戲吧 20,sep n end n rnum random.randint 1,100 while 1 1 num int...
寫個核心鍊錶，練習練習
立下此碼,過段時間再看是否有進步 include include malloc h struct list define list init head head next head head prev head void list add struct list new struct list pr...