need help with integers

[tomisme]

Hey

How do i ensure a user only enters 4 values into an integer.

entered values will range from 0000-9999

[Adak]

Hey

How do i ensure a user only enters 4 values into an integer.

entered values will range from 0000-9999

do   {
   //print your message here, asking them to enter a number between 0 and 10000
   //get your number in here from the user

}while(number < 0 || number > 10000);

Note that "0000" is not an integer. Integers are never proceeded by a zero.

[tomisme]

thats works

thanks

[Dino]

Read the user input as a string and then parse using strtol(). Search the forum for strtol(). Cast to an integer to convert from long to int. Use printf() formatting to add leading zeros when you report the value.

Todd

[Adak]

Remember that kind of loop, please.

It's used a great deal in all kinds of programs.

You're welcome.

[tomisme]

on second thoughts what stops the user from entering 1,2 or 3 values insted of the required 4?

[jason_m]

Are you saying the number has to consist of exactly four digits? Or that at most it consists of four digits? If you want the former, you just have to change the condition at the bottom of the do...while loop posted above.

[tomisme]

yes sorry i should have mentioned that the value entered by the user will be 4 values.

its a uni project part of the criteria is that i have to make sure that the ammount of digits entered is 4 and nothing else.

[Dino]

Then your first loop condition will be to ensure the user enters 4 characters. Therefore, you have to accept it as a string, not as a number.

[iMalc]

Not necessarily true.
Just set the loop condition to:
number < 1000 || number > 9999

Did you forget something?:

entered values will range from 0000-9999

Todd Burch was right.

[Elysia]

It seems I placed some text in a reply it shouldn't have been :|
Yes, it seems Todd is right...