How do I convert an integer to the corresponding words in objective-c?

Apple has a lot of handy formatting functionality built in for many data types. Called a "formatter," they can convert objects to/from string representations.

For your case, you will be using NSNumberFormatter, but if you have an integer you need to convert it to an NSNumber first. See below example.

NSInteger anInt = 11242043;NSString *wordNumber;//convert to wordsNSNumber *numberValue = [NSNumber numberWithInt:anInt]; //needs to be NSNumber!NSNumberFormatter *numberFormatter = [[NSNumberFormatter alloc] init];[numberFormatter setNumberStyle:NSNumberFormatterSpellOutStyle];wordNumber = [numberFormatter stringFromNumber:numberValue];NSLog(@"Answer: %@", wordNumber);// Answer: eleven million two hundred forty-two thousand forty-three

If you'd like to learn more about formatters:https://developer.apple.com/library/content/documentation/General/Conceptual/Devpedia-CocoaApp/Formatter.html

Power of extension for Swift 5

import Foundationpublic extension Int {  var asWord: String? {    let numberValue = NSNumber(value: self)    let formatter = NumberFormatter()    formatter.numberStyle = .spellOut    return formatter.string(from: numberValue)  }}var value = 2if let valueAsWord = value.asWord {    //do something with your worded number here    print("value worded = \(valueAsWord)")} else {    print("could not word value :(")}

Note: Edited to protect against formatter.string(from: returning nil which is highly not likely, but still possible.

Output:value worded = two

From the docs:

NSNumberFormatterSpellOutStyle

Specifies a spell-out format; for example, “23” becomes “twenty-three”.

Available in iOS 2.0 and later.

Declared in NSNumberFormatter.h.

As your question isn't very specific, I won't post full-fledged code source either.