Question

我创建了一个函数：

function display_book(x)
[a,b] = strtok(x,',') ;
[b,c] =strtok(b,',');
b=strrep(b,',',' ');
c=strrep(c,',',' ');
fprintf('Title  : %s \n',a);
fprintf('Author :%s \n',b);
fprintf('Number of pages :%s \n',c);
end

它基本上显示了标题作者和由分隔符分隔的用户字符串输入的页数。例如：

 display_book('MATLAB 101, ATTAWAY CALMS, 115')
 Title: MATLAB 101
 Author: ATTAWAY CALMS
 Number of Pages: 115

我跟着一个不同的代码，我调用了display_book函数：

 function library

 x=input(' What would you like to do : ','s');

 while strcmpi('quit',x) ~= 1

 Q=input(' Please  create a book with a title, author and number of pages: 
 ','s');
 display_book(Q);

 fprintf('The %s has been added to your library \n',Q);

 x=input(' \n What would you like to do: ','s');

 if strcmpi('list books',x) == 1
 end

 end

 disp('Good-Bye')
 end

所以到目前为止，当我调用我的库函数时，它允许我显示书籍，直到我进入退出以停止代码。

但是，我希望改进代码并能够列出我输入的书籍。如果我在退出图书馆之前输入了两本书，我希望能够看到我输入的书籍。

示例：

list_books

What would you like to do: list books
Title: The Hobbit
Author: J. R. R. Tolkien
Number of Pages: 454

Title: Harry Potter and the Cursed Child
Author: J. K. Rowling
Number of Pages: 245

我需要一些帮助来弄清楚如何将输入“存储”到我的库函数中。

Answer 1

您可以将标题，作者，页面数量存储在单元格数组中，然后在必要时访问其成员：

function myScript() %this will create an empty cell array, push some books and list them
    myLibrary={};
    myLibrary=save_book('MATLAB 101, ATTAWAY CALMS,115',myLibrary);
    myLibrary=save_book('some bad book, me,123',myLibrary);
    list_books(myLibrary);
end

function [lib]=save_book(x,lib) %saves a book to library
[a,b] = strtok(x,',') ;
[b,c] =strtok(b,',');
b=strrep(b,',',' ');
c=strrep(c,',',' ');
lib=[lib; {a,b,c}];
end

function list_books(library) %lists books in library
    for i=1:1:size(library,1)
        fprintf('Title  : %s \n',library{i,1});
        fprintf('Author :%s \n',library{i,2});
        fprintf('Number of pages :%s \n\n',library{i,3});
    end
end

创建列出书籍

1 个答案: