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23Day-getBookSetBook.sol

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+// SPDX-License-Identifier: MIT
+
+pragma solidity >=0.5.0 <0.9.0;
+
+contract Day5 {
+//Create a structure -> struct Book { string title; string author; uint256 book_id; }
+    struct Book {
+        string title;
+        string author;
+        uint256 book_id;
+    }
+    Book[5] book;
+    uint256 i = 1;
+
+    function setBook(
+    //Create two functions a) setBook(title(string),author(string),id(uint)) - To set the book title, author and id given in the "Book type" array. 
+        string memory _titile,
+        string memory _author,
+        uint256 _id
+    ) public {
+        book[i] = Book(_titile, _author, _id);
+        i++;
+    }
+//getBook(id(uint)) - To get the book title,author and id of the Book whoose id is passed as an argument.
+    function getBook(uint256 _i)
+        public
+        view
+        returns (
+            string memory,
+            string memory,
+            uint256
+        )
+    {
+        return (book[_i].title, book[_i].author, book[_i].book_id);
+    }
+}