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Home Forums Objective C Strange behavior from NSString : initWithFormat

Strange behavior from NSString : initWithFormat
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2:36 pm
October 27, 2008


Lakario

Noob

posts 3
1

I am trying to create a formatted string to display in a UITableView so I did the following:

NSString *itemText = [[NSString alloc] initWithFormat:@”%s   $%d”, i.itemName, i.itemPrice];
[cell setText:itemText];
[itemText release];

This sets and runs fine, but when I display the output it looks like this:

The expected output would be more like: “Item Name   $5.00″

Any idea what's going on here?

2:47 pm
October 27, 2008


Lakario

Noob

posts 3
2

I switched that %s for a %@ at somebody's recommendation and it produced the desired result, but what exactly is %@? I thought %s was what I needed.

11:38 am
November 18, 2008


VertigoSol

Moderator

posts 26
3

%s == char* type -> c-string
%@ == object type -> NSString is a cocoa object representing a string

%@ in general prints objects and since most of the cocoa types are objects this is the preferred way to print stuff

here is where you would use %s

char[6] myString;
sprintf(myString, “hello”);

NSLog(@”string = %s”, myString);
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