Remove first character from string if 0

Question

I need to remove the first character from my UITextfield if it's a 0.

Unfortunately I don't know how to extract the value of the first character or extract the characters of the string after the first character.

Thanks

Answer 1

One solution could be:

if ([string hasPrefix:@"0"] && [string length] > 1) {     string = [string substringFromIndex:1]; } 

Answer 2

You would probably want something like this, using hasPrefix:

if ([string hasPrefix:@"0"]) {     string = [string substringFromIndex:1]; } 

You could also use characterAtIndex: which returns a unichar:

if ([string characterAtIndex:0] == '0') {      string = [string substringFromIndex:1]; } 

Note that, 'a' is character, "a" is C string and @"a" is NSString. They all are different types.