Phone number to accept 11 digit number only

Question

Hi good day to all I just want to ask for help about storing 11 digit phone number and if the phone number inputted by the user is only 10 or 12 it will ask again for the 11 digit phone number. For C Language. Thank you.🙏

Answer 1

If (number.length !== 11){
alert('Must contain 11 digits');
}

That will work on JavaScript. You didn't specify the language.

Answer 2

sorry about that sir i forgot ...its for c language