I am novice in Objective-c ,i want to know ,in Objective-C, how can I check whether input value is integer or float like 2, 3.00,
here 2 is integer and 3.00 is float data-type
how can i find-out it.Thanks in advance
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Why do you need to know, is the difference important?Wain– Wain2015-03-14 18:54:27 +00:00Commented Mar 14, 2015 at 18:54
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yes @Wain i want to develop a polynomial program . Buy using that user can find out and kind of polynomial value. Assume , 3x3 - 5x2 + 6 and ..(3.31 x 108 + 2.01 x 107) their are two polynomial .First one is normal integer polynomial and second one is float-polynomial . i want to check ... user input belong in which polynomial ...Ferrakkem Bhuiyan– Ferrakkem Bhuiyan2015-03-14 19:01:13 +00:00Commented Mar 14, 2015 at 19:01
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And how are you taking the user input in?Wain– Wain2015-03-14 19:15:52 +00:00Commented Mar 14, 2015 at 19:15
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1This was already answered here, I suggest you check it out: stackoverflow.com/questions/15020989/…IxPaka– IxPaka2015-03-14 19:30:58 +00:00Commented Mar 14, 2015 at 19:30
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1Just assume all numbers are floating point. You're going to have to convert them anyway to solve.i_am_jorf– i_am_jorf2015-03-14 20:06:53 +00:00Commented Mar 14, 2015 at 20:06
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1 Answer
So, the simplest solution is probably to check each string input for a period (.) character (possibly also checking for another number after it) because checking that the number 3.00 and 3 are different is quite hard (because they are only different if you tell them to be).
The easiest way to do that would be with rangeOfString:.
