Double object is not initializing as expected

[Salman Ahmed]

Hi, I have initialized the double object as:

But when I see it on debugger watch, I get this

what could be the possible reason for getting this small fraction? 

[Andrey Barinov]

Salman Ahmed:

Hi, I have initialized the double object as:

But when I see it on debugger watch, I get this

what could be the possible reason for getting this small fraction? 

Please, study this:

https://www.mql5.com/en/docs/basis/types/double

[Salman Ahmed]

Andrey Barinov:

Please, study this:

https://www.mql5.com/en/docs/basis/types/double

Thank you for your reply, I understand what is the problem and solution. but now my question is: this is not a case in MQL4, why it is working perfectly in MQL4?

[William Roeder]

Salman Ahmed: what could be the possible reason for getting this small fraction? 

Floating point has infinite number of decimals, it's your not understanding floating point and that some numbers can't be represented exactly. (like 1/10.)
          Double-precision floating-point format - Wikipedia, the free encyclopedia

See also The == operand. - MQL4 programming forum

Print out your values to the precision you want with DoubleToString - Conversion Functions - MQL4 Reference.