Issue Converting NSString to Int

Question

For some reason when I convert this NSString to an integer, I get a completely random (yet consistent) number.

- (void)connectionDidFinishLoading:(NSURLConnection *)connection
{
    // do something with the data
    // receivedData is declared as a method instance elsewhere
    NSLog(@"Succeeded! Received %d bytes of data",[receivedData length]);

    // release the connection, and the data object
    [connection release];

    debtString = [[NSString alloc] initWithData:receivedData encoding:NSUTF8StringEncoding];

    NSLog(@"String form: %@", debtString);
    [receivedData release];

    int debtInt = [debtString intValue];
    NSLog(@"Integer form: %i", debtInt);

}

and this is my console output:

2011-07-19 11:43:18.319 National Debt[50675:207] Succeeded! Received 14 bytes of data
2011-07-19 11:43:18.320 National Debt[50675:207] String form: 14342943000000
2011-07-19 11:43:18.320 National Debt[50675:207] Integer form: 2147483647

If I put a breakpoint on the NSLog(@"Integer form: %i", debtInt); line, and hover over the debtString value in the line above, there is an invalid summary. The only reason I can think of for that happening is that I am releasing the debtString before it is converted, however this is obviously not true.

Is it possible our National Debt has surpassed the storage capacity of an unsigned int!? Well I'll be damned. — Perception, Jul 19 '11 at 15:52
http://stackoverflow.com/questions/2107544/types-in-objective-c-on-iphone — albertamg, Jul 19 '11 at 15:57

score 4 · Accepted Answer · answered Jul 19 '11 at 15:55

4

The int value of your string is higher than the maximum value of an int. Therefor it displays the max value of int which is 2.147.483.647

answered Jul 19 '11 at 15:55

joern

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1

try a "long long". NSString has [debtString longLongValue] – joern Jul 19 '11 at 16:04
`int debtInt = [debtString longLongValue]; NSLog(@"Integer form: %lli", debtInt);` returns `2011-07-19 12:31:52.396 National Debt[51367:207] String form: 14342943000000 2011-07-19 12:31:52.397 National Debt[51367:207] Integer form: 432424662392489408` – Peter Kazazes Jul 19 '11 at 16:32
2

@Peter - your converting the string correctly now, but then storing it back into an int, which is too small for it. Try long long debtInt = [debtString longLongValue]; instead. – Perception Jul 19 '11 at 16:33

Issue Converting NSString to Int

1 Answers1