About the Type Casting problem in C++

Question

The code is right logic but when it run, the output is false. Ex, enter number 5.56 and save into var 'a'
t =(int)a =5
a = a-t => a=0.56.
a*=10 =5.6
t = 5
a = a-t => a=0.6
a *=10 = 6
t = (int)a = 5(dont know why???)
a = a-t => 1
if enter number ex 6 then it output right result.
https://code.sololearn.com/cGPHYxzj6caq/?ref=app

Answer 1

https://code.sololearn.com/c3UAxnirjRw5/?ref=app
cout is rounding. floating point math is fun

Answer 2

Dude, I'm seeing this question since last five minutes and still I'm unable to understand it....

Answer 3

i run my code on app Mobile C on android.