Ada:put()具有自定义类型
我正在寻找将Put()函数与我创建的自定义类型一起使用的方法。我怎么能这样做Ada:put()具有自定义类型,ada,Ada,我正在寻找将Put()函数与我创建的自定义类型一起使用的方法。我怎么能这样做 with Ada.Text_IO, Ada.Integer_Text_IO; use Ada.Text_IO, Ada.Integer_Text_IO; procedure main is type count is range -2..2 ; begin Put(counter); end main; 这就是我得到的: Builder results C:\Users\*********
with Ada.Text_IO, Ada.Integer_Text_IO;
use Ada.Text_IO, Ada.Integer_Text_IO;
procedure main is
type count is range -2..2 ;
begin
Put(counter);
end main;
这就是我得到的:
Builder results
C:\Users\***********\Desktop\ada project\src\main.adb
26:11 expected type "Standard.Integer"
26:7 no candidate interpretations match the actuals:
26:7 possible missing instantiation of Text_IO.Integer_IO
您缺少实例,
Counter
,并且没有子程序Put
接受类型为Count
的参数。一些选择:
- 选项1-使用
属性图像
- 选项2-转换为类型
整数
- 选项3-定义子类型而不是类型
- 选项4-实例化通用包
Ada.Text\u IO.Integer\u IO
with Ada.Text_IO;
procedure Main is
type Count is range -2 .. 2;
Counter : Count := 1;
begin
Ada.Text_IO.Put (Counter'Image); -- Counter'Image returns a String
-- or
Ada.Text_IO.Put (Count'Image (Counter));
end Main;
with Ada.Integer_Text_IO;
procedure Main is
type Count is range -2 .. 2;
Counter : Count := 1;
begin
Ada.Integer_Text_IO.Put (Integer (Counter));
end Main;
with Ada.Integer_Text_IO;
procedure Main is
subtype Count is Integer range -2 .. 2;
Counter : Count := 1;
begin
Ada.Integer_Text_IO.Put (Counter);
end Main;
with Ada.Text_IO;
procedure Main is
type Count is range -2 .. 2;
Counter : Count := 1;
package Count_Text_IO is
new Ada.Text_IO.Integer_IO (Count);
begin
Count_Text_IO.Put (Counter);
end Main;