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Chapter: 2 / Q: e.g2.5.3.2
Some expressions will cause decltype to yield a reference type. Generally speaking, decltype returns a reference type for expressions that yield objects that can stand on the left-hand side of the assignment
Chapter: 2 / Q: e.g2.6.1.1
We’ll name our version Sales_data to distinguish it from Sales_item. We’ll define our class as follows
Chapter: 2 / Q: e.g2.6.1.2
The close curly that ends the class body must be followed by a semicolon. The semicolon is needed because we can define variables after the class body
Chapter: 2 / Q: e.g2.6.2.1
Because this program will be longer than any we’ve written so far, we’ll explain it in separate parts. Overall, our program will have the following structure
Chapter: 2 / Q: e.g2.6.2.2
The string type holds a sequence of characters. Its operations include the >>, <<, and == operators to read, write, and compare strings, respectively. With this knowledge we can write the code to read the first transaction
Chapter: 2 / Q: e.g2.6.2.3
Our program will next repeat the same code to read data into data2
Chapter: 2 / Q: e.g2.6.2.4
Our other task is to check that the transactions are for the same ISBN. If so, we’ll print their sum, otherwise, we’ll print an error message
Chapter: 2 / Q: e.g2.6.3.1
We can use these facilities to guard against multiple inclusion as follows
Chapter: 3 / Q: 3.1
Rewrite the exercises from § 1.4.1 (p. 13) and § 2.6.2 (p. 76) with appropriate using declarations
Chapter: 3 / Q: 3.2
Write a program to read the standard input a line at a time. Modify your program to read a word at a time
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