我想在objective-c中使用整数和float来获得相同的函数？

Question

I'm making an calculator in xcode using Objective-C i used float in syntax but i want that when answer is float calculator show float type not integer only and i want that when answer is integer it show integer when answer is float it shows float. here is code https://github.com/syntaxxerrorr/Calculator

Answer 1

1. Test whether the value is int or not. You can do it like this:

   if (fmod(fVal, 1.0) == 0.0) // is integer

2. Get integer result:

   int result = (int)roundf(myFloat );

Display the corresponding value, using the condition.

Answer 2

For example:

float answer = 12.0;
float truncAnswer;
int intAnswer;

truncAnswer = truncf(answer);
intAnswer = (int)truncAnswer;

if(answer == truncAnswer)
{
    NSLog(@"Integer Answer = %d", intAnswer);
}else{
    NSLog(@"Float Answer = %f", answer);
}

If you change the initialization of answer to 12.0, it will print the integer answer.

Answer 3

Do you know NSNumber in Objective-C is a class represent for Float, Double, Int, Integer, etc? So you can return NSNumber in your function.

Let's try to use it.