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QUESTION
i somehow have alot of Errors, when i try to implement another given class in the Book (https://github.com/jaege/Cpp-Primer-5th-Exercises/blob/master/ch1/Sales_item.h this one). Now if i try to compile my code i only get alot of Error messages. This is my main class:
...ANSWER
Answered 2022-Feb-10 at 02:29I observed that Sales_item.h
is included in your main function, and in the link you shared, Sales_item.h
includes Version_test.h
, so you need to download both header files to ensure that your main function runs correctly.
QUESTION
Working through some exercises in C++ Primer 5th Ed (Stanley) and on exercise 7-39.
Class for exercise 7-39.
...
ANSWER
Answered 2021-Aug-19 at 05:07No, you cannot have both. It would result in a compilation error C2668: 'Sales_data::Sales_data': ambiguous call to overloaded function
when you try to construct the object without any argument, as the example shown below.
QUESTION
The original question is exercise 6.36 in C++ Primer 5th.
It wants a declaration which returns the reference of an array including 10 strings.
I found the answer here.
But when I test it, gdb tells me it returns a int *
variable.
Here is how my test goes:
...ANSWER
Answered 2021-Mar-08 at 10:24Is this answer correct?
It is a declaration of a function that returns reference to an array of 10 int.
gdb tells me it returns a int * variable.
No it doesn't. It tells you that the variable t
that you created is an int *
variable.
QUESTION
I started reading C++ Primer, 5th Edition and I'm having troubles understanding one thing when it comes to std::cin
.
The following is the code they present as their example. The idea behind it is that a bookstore is recording its transactions and the program should be able to sum back-to-back transactions as long as they belong to the same book (ie, they have the same isbn).
I haven't included the header file since I believe it isn't relevant to my question. In case it's actually needed, you can find it here.
My issue with the example is that the comments explaining the code say that the first Sales_item
object, named total
, is used to store the current transaction, while the one named trans
is used to 'hold the running sum'. That is, the total.
ANSWER
Answered 2021-Jan-10 at 21:16I agree, the comments appear to be swapped. They should be:
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