Check Digits and extracting digits
I think I can figure out the code for this but I am having a very hard time getting past the first step. Any suggestions are greatly appreciated.
What I need to do is take a 9 digit account number (for an electrical bill) and 1) determine if it is a valid account using the check digit, and 2) determine the type of account it is (ie if the 2nd digit is a 4, its a residential account).
Suppose the account is 123456789 and I need to add the 3rd, 5th, 7th, and 9th digits, how to do I extact the digits so they can be worked with? All I can think of is to do something like this:
cout << "enter the third digit of your account"
cin >> digit3 >> endl;
cout << "enter the fifth digit..."
cin >> digit5 >> endl;
and so on...
total = digit3 + digit5 + digit7 + digit 9
Its obviously not practical to have the user enter their account number one digit per line as I am doing But how else do it make the account number into something I can manipulate?
I am a beginner. And not a very smart one, obviously :(
What I need to do is take a 9 digit account number (for an electrical bill) and 1) determine if it is a valid account using the check digit, and 2) determine the type of account it is (ie if the 2nd digit is a 4, its a residential account).
Suppose the account is 123456789 and I need to add the 3rd, 5th, 7th, and 9th digits, how to do I extact the digits so they can be worked with? All I can think of is to do something like this:
cout << "enter the third digit of your account"
cin >> digit3 >> endl;
cout << "enter the fifth digit..."
cin >> digit5 >> endl;
and so on...
total = digit3 + digit5 + digit7 + digit 9
Its obviously not practical to have the user enter their account number one digit per line as I am doing But how else do it make the account number into something I can manipulate?
I am a beginner. And not a very smart one, obviously :(
Input a single digit and experiment with % and /.
To get you started, see what the results of these operations are:
x%10
(x%100)/10
To get you started, see what the results of these operations are:
x%10
(x%100)/10
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