scan string using nsscanner class

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C

Objective-C

hi, i want to scan this string

"hello i am emp 1313 object of string class 123"

so in this i want to know if their are any integer value present and if present i want to display them for this i am using the NSScanner class and heres a view of my code

NSString *str = @" hello i am emp 1313 object of string class 123";

    NSString *limit = @" object";
    NSScanner *scanner = [NSScanner scannerWithString:str];

    int i;
    [scanner scanInt:&i];
    NSString *output;
    [scanner scanUpToString:limit intoString:&output];
    NSLog(@"%d",i);

but the problem is that i am not able to do it and i want to use NSScanner class only so can you experts give me some suggesstions regarding this.....