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Nov 5th, 2009
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Trouble converting int to float

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I am trying to write a method that accepts two integer parameters and returns their average as a float, but for some reason it is only returning a double. I am quite sure that there needs to be "f" after the resulting value, but it's not showing up. Can someone please help me fix this?

Java Syntax (Toggle Plain Text)
  1. public static float average(int x, int y)
  2. 	{
  3. 		return (x + y)/2;
  4. 	}

Java Syntax (Toggle Plain Text)
  1. 	System.out.println("average(\"7, 5\") = " + Lab7.average(7, 5));

RESTULTS:
average("7, 5") = 6.0
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Re: Trouble converting int to float
Java Syntax (Toggle Plain Text)
  1. return (float)((x+y)/2.0);
  2.  
  3. OR
  4.  
  5. return ((float)(x+y))/2.0;
Last edited by BestJewSinceJC; Nov 5th, 2009 at 7:40 pm.
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Re: Trouble converting int to float
Click to Expand / Collapse  Quote originally posted by BestJewSinceJC ...
Java Syntax (Toggle Plain Text)
  1. return (float)((x+y)/2.0);
  2.  
  3. OR
  4.  
  5. return ((float)(x+y))/2.0;
I tried both suggestions but my results are still only double... is there some other way of converting an int to a float? I tried casting too, but it didn't work either. Perhaps I'm doing something completely unrelated wrong?
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Re: Trouble converting int to float
You're probably storing it in a double variable. For example

double result = 0.0;

result = average(x,y);
Now result is a double which is a larger type than float.
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Re: Trouble converting int to float
Are you expecting it to print the "f"? Doubles and floats don't look any different as output.
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Re: Trouble converting int to float
Click to Expand / Collapse  Quote originally posted by Ezzaral ...
Are you expecting it to print the "f"? Doubles and floats don't look any different as output.
Well if you're right, then I suppose the assignment will be a lot easier to complete... but I'm quite sure my instructor said that the printed value of a float was supposed to be followed by an "f".
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Re: Trouble converting int to float
Then do System.out.println("f") afterwards. lol.
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Re: Trouble converting int to float
The literal value of a float in your code would be "6.0f", but printed output does not show that "f" unless you put it there explicitly.

Your output is perfectly fine.
Last edited by Ezzaral; Nov 5th, 2009 at 10:26 pm.
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Re: Trouble converting int to float
Click to Expand / Collapse  Quote originally posted by Ezzaral ...
The literal value of a float in your code would be "6.0f", but printed output does not show that "f" unless you put it there explicitly.

Your output is perfectly fine.
Ok I'm really glad that's the case, because I had spent hours trying to figure out what I was doing wrong lol. Thank you very much for your time!
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