Comparing two more-less numbers in Objective-C

Question

I don’t understand why they don’t plow logical operators, read an article, I’m doing everything right, but it compares in its own way, here’s the code:

NSString *State0 = @"0"; NSString *State2 = @"25"; NSString *State3 = @"50"; NSString *State4 = @"80"; if (LabelSchet.text > State0) { LabelState.text = @"Ваш статус: '1'"; } if (LabelSchet.text > State2) { LabelState.text = @"Ваш статус: '2'"; } if (LabelSchet.text > State3) { LabelState.text = @"Ваш статус: '3'"; } if (LabelSchet.text > State4) { LabelState.text = @"Ваш статус: '4'"; }

There is a number in LabelState - 15. Does it compare in any case what is in LabelState more than in any NSString, what did I do wrong?

From the text of the question goes that int co string or string with string.
That is, you want to compare the values of the two numbers that are written in the object lines?

Accepted Answer · 2013-09-22T09:08:26

So directly compare nizzya. Can be done as follows:

  NSString *string1 = @"15"; NSString *string2 = @"25"; NSComparisonResult result = [string1 compare:string2]; if (result == NSOrderedAscending) { // string1 < string2 } else if (result == NSOrderedDescending) { // string1 > string2 }else if (result == NSOrderedSame) {// string1 == string2 }

or:

 if (result < 0) {// string1 < string2 } else if (result > 0) { // string1 > string2 } else if (result == 0) {// string1 == string2 }

and in your case it would be right to bring everything to numbers and compare them already:

 int labelInt = [LabelSchet.text intValue];

or

 NSInteger labelInteger = [LabelSchet.text integerValue];

I think that bringing to numbers is the healthiest option for the vehicle, show him how it is done))
plus to bring everything to numbers and compare them already .
If you need to work only with numbers, it makes sense not to use NSString at all

Comparing two more-less numbers in Objective-C

1 answer 1

More articles: