Split an NSString into an array in Objective-C

Question

How can I split the string @\"Hello\" to either:

• a C array of \'H\', \'e\', \'l\', \'l\', \'

Answer 1

You can use - (unichar)characterAtIndex:(NSUInteger)index to access the string characters at each index.

So,

NSString* stringie = @"astring";
NSUInteger length = [stringie length];
unichar stringieChars[length];
for( unsigned int pos = 0 ; pos < length ; ++pos )
{
    stringieChars[pos] = [stringie characterAtIndex:pos];
}
// replace the 4th element of stringieChars with an 'a' character
stringieChars[3] = 'a';
// print the modified array you produced from the NSString*
NSLog(@"%@",[NSString stringWithCharacters:stringieChars length:length]);