[G35_Decorator_1] The `value` type don't match main function comments

[falloutkid]

This is main function comments

// 7% tax: 19*1.07 = 20.33
// 20% discount, 19% tax: (999*0.8)*1.19 = 951.05

And output format is followings.

std::ostream& operator<<( std::ostream& os, Money money )
{
   return os << money.value;
}

So, I think output type is 'value' field type. Then 'value' field type is uint64_t.

cpp_software_design/G35_Decorator_1.cpp

Line 23 in 1f2fe52

uint64_t value{};

cpp_software_design/G35_Decorator_1.cpp

Line 30 in 1f2fe52

return Money{ static_cast<uint64_t>( money.value * factor ) };

If main comments is collect, it should change uint64_t to double(or float).