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Why No Decimals?

  • #1
  • First Post: Sep 15, 2023 1:24am Sep 15, 2023 1:24am
Hi coders, I have simple questions to ask :-

Inserted Code
   double rad1=180/(22/7); // Expecting 57.27273
   double rad2=180*7/22; // Expecting 57.27273
 
   {Alert("Results : "+DoubleToStr(rad1,5)+" / "+DoubleToStr(rad2,5));}

If I run the Alert, the output is "Results : 60.00000 / 57.00000", my questions are :-

1) I'm expecting the output would be the same 57.27273 for both rad1 and rad2.

2) 180/(22/7) is in fact = 180*7/22, why there are different answers : 60.00000 and 57.00000 ?

Is there any way(s) to get the correct output of 57.27273 for both rad1 and rad2 ? Thanks
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  • #2
  • Sep 15, 2023 2:22am Sep 15, 2023 2:22am
Inserted Code
    double rad1=180.0/(22.0/7.0); // Expecting 57.27273
   double rad2=180.0*7.0/22.0; // Expecting 57.27273
 
   {Alert("Results : "+DoubleToStr(rad1,5)+" / "+DoubleToStr(rad2,5));}
I haven't looked into the books, but I assume the value you used have become typecast by the compiler when you used something like 180, instead of 180.0

This one I posted works.
  • #3
  • Last Post: Sep 15, 2023 2:39am Sep 15, 2023 2:39am
Quoting kennyhubbard
double rad1=180.0/(22.0/7.0); // Expecting 57.27273 double rad2=180.0*7.0/22.0; // Expecting 57.27273 {Alert("Results : "+DoubleToStr(rad1,5)+" / "+DoubleToStr(rad2,5));} I haven't looked into the books, but I assume the value you used have become typecast by the compiler when you used something like 180, instead of 180.0 This one I posted works.
Thanks Kenny, yes, it works. If I don't ask, I won't get the correct answer forever, LOL.
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