Simple string concatenation in Objective C

Question

I have an NSString named 'you' with value "This is a you string!".

I want to concat "123" in 'you', how can I do it?

I am using this code and it is giving an error.

you=[you stringByAppendingString:@"123"];

needs more useful info: what kind of error are you getting, and where? at compile time or run time or? — Michael Dautermann, Jan 13 '12 at 16:34
I get "Program Received Signal SIGABRT". I think there might be an error with my logic. — Umair Khan Jadoon, Jan 13 '12 at 16:38
possible duplicate of [How do I concatenate strings?](http://stackoverflow.com/questions/510269/how-do-i-concatenate-strings) — Marc, Jan 23 '14 at 08:37
@UmairKhanJadoon you may want to look at [some neat shortcuts](http://stackoverflow.com/a/35071507/105539) to make this far less of a headache. — Volomike, Jan 28 '16 at 20:38

score 75 · Accepted Answer · answered Jan 13 '12 at 16:50

This code here is working for me

NSString *s = @"avant";
s = [s stringByAppendingString:@" - après"];
NSLog(@"%@", s);

2012-01-13 11:48:59.442 tabbar[604:207] avant - après

So my guess is that your you is a bad pointer that is not nil and not the NSString you think it have.

Have you try an NSLog on that value before the call?

score 47 · Answer 2 · edited Jun 22 '13 at 14:29

47

You can try this also:

you = [NSString stringWithFormat:@"%@%@", you, @"123"];

edited Jun 22 '13 at 14:29

andrewsi

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answered Jun 22 '13 at 14:12

Spidey

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Jayprakash Dubey · Answer 3 · 2014-01-23T09:49:39.043

3

Code :

NSString *you;
you = @"This is you String!";
NSLog(@"you : %@ ",you);

you = [you stringByAppendingString:@"123"];
 NSLog(@"you : %@ ",you);

[you stringByAppendingFormat:@"%@%@",you,@"123"];
NSLog(@"you : %@ ",you);

Result in Console :

[233:907] you : This is you String!

[233:907] you : This is you String!123

edited Jan 23 '14 at 09:49

answered Jan 23 '14 at 07:51

Jayprakash Dubey

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No `you=` on the last one? And according to the log, don't the the meaning of this one. On the logs, there is a "tempString"... – Larme Jan 23 '14 at 08:02
@Larme : Dude that tempString was earlier code.. Why down vote? – Jayprakash Dubey Jan 23 '14 at 09:49
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I didn't downvote. Still don't understand the last line. You show a different method, but you don't put `you =` before. Indeed, so the last log is normal, but still don't understand the meaning of this one to help the topic. – Larme Jan 23 '14 at 10:03

score 1 · Answer 4 · answered Feb 26 '16 at 14:00

1

Please try this

NSString *version = @"14.5.1";

NSString *build = @"1.0";


self.versionLabel.text = [NSString stringWithFormat:@"%@%@%@%@%@" , @"V : " ,version,@" ( ",build, @" )" ];

answered Feb 26 '16 at 14:00

Binoy jose

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Simple string concatenation in Objective C

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