Inputted values from textfield to NSArray - ios

Question

I have a problem creating a solution to this problem:
Create an app that will store 5 numbers (preferrably float) and then sort them out.The array type is immutable.
First off: My problem is how to get the floats from the textfield then put it into a array. My idea is to code it like this:
int a = [num1.text intValue];
int b = [num2.text intValue];
int c = [num3.text intValue];
NSArray *myArray;
myArray = [NSArray stringWithFormat: #"%f",a,b,c];
My second problem is that I can't understand how to sort the floats. Will you please give me some idea?
Thank you very much!

Answer 1

Something like this should work:
CGFloat a = [num1Label.text floatValue];
CGFloat b = [num2Label.text floatValue];
CGFloat c = [num3Label.text floatValue];
CGFloat d = [num4Label.text floatValue];
CGFloat e = [num5Label.text floatValue];
NSArray *array = #[ [NSNumber numberWithFloat:a],
[NSNumber numberWithFloat:b],
[NSNumber numberWithFloat:c],
[NSNumber numberWithFloat:d],
[NSNumber numberWithFloat:e]];
array = [array sortedArrayUsingComparator:^NSComparisonResult(id obj1, id obj2) {
// logic for sorting
NSNumber *number1 = (NSNumber *)obj1;
NSNumber *number2 = (NSNumber*)obj2;
return [first compare:second];
}];
CGFloat is basically the same as float.
If you check the Documentation (OPTION + Click on that), you see this:
# define CGFLOAT_TYPE float
// ...
typedef CGFLOAT_TYPE CGFloat;
CG comes from Core Graphics.
float comes from C/C++
It is more recommended to use CGFloat in Objective-C, instead of simply float. Also, NSInteger instead of int.