C++

Forum

 
Input needed on starting an assignment.

Jan 24, 2017 at 8:09pm
WhatHaveIChoosen22 (35)
Hello,

I need assistance on starting writing my code, the direction states that the input will be taken from standard input, and so we need to define a book, the ISBN is 13 digit number. The title is a string of arbitrary length that ends with a line break.
B<ISBN><Title>
Ex. B 1231243556211 Title

I am fairly new to C++ and would like to get suggestion on how to start. Thanks!

Jan 24, 2017 at 8:51pm
joe864864 (249)
Start it the same way you do with any other program. What do you think this program is going to need to do this job? How are your going to store the info you get? You are going to need variables for the for the different info. The ISBN is going to have to be able to hold 13 digits and I recommend using get line and to input the title as a string.
Jan 24, 2017 at 9:10pm
imohamme5 (57)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
 
#include <iostream>
#include <string>
using namespace std;
int main()
{
string title;
int isbn = 0;
cout << "enter isbn" << endl:
cin >> isbn;
cin.ignore();
cout << "enter title" << endl;
getline (cin, title);


cout << isbn << endl << title;
cin.get ();
return 0;
}
Edit & run on cpp.sh
Last edited on Jan 25, 2017 at 4:57pm
Jan 24, 2017 at 9:24pm
WhatHaveIChoosen22 (35)
@joe864863
Ah ok, I shall attempt that, and see what happens. Thanks.

@imohamme5
Thanks on your input, my code so far resembles that of yours, thus it seems I am heading in right direction.
Jan 24, 2017 at 10:05pm
mbozzi (3925)
At 13 digits, a valid ISB number will be too large to store in many platforms' int.

I suggest using a string, or a wrapper class around a single string. It will require some extra validation, but you gain portability.

Alternatively, make sure you ask for an integer that is large enough. A 64-bit integer is the most common big-enough type:
using isbn = std::uint_least64_t;
Last edited on Jan 24, 2017 at 10:06pm
Topic archived. No new replies allowed.