+ 1

Why does my code print the original sum value, and not what it's supposed to be?

My code is meant to calculate: 1-1/2+1/4-1/6+1/8-1/10......+1/20 https://code.sololearn.com/cvd32684nn3j/?ref=app Thanks in advance:) Edit: I changed all the variables to double, and it worked :D

27th Sep 2019, 11:40 AM
Benan Essayed
Benan Essayed - avatar
2 odpowiedzi
+ 2
i think its because the operation are in integer, thus its rounding up(or down, i dont remember) the result. change the sum type into float or double, also cast the divisor fom the division operation
27th Sep 2019, 11:58 AM
Taste
Taste - avatar
+ 7
sum=sum+sign*(1/i); In this expression 1/i will be 0 for every i>1 and being a whole number, to avoid it you can use float or double type here, same for variable sum as it will not be a whole number in general. Benan Essayed you can use 1.0/i and make variable sum float type(which you already done) OR make i in float type too.
27th Sep 2019, 11:57 AM
Gaurav Agrawal
Gaurav Agrawal - avatar