Store decimal number in contract and then read it back

Question

I am trying to store a decimal number in a smart contract struct which represent the price of an item.

The field in the struct is uint and I want to store values like 0.001 which is the cost in ether. When I read the cost value I get a BigNumber similar to this:

BigNumber { s: 1, e: 0, c: [ 0 ] }

How can I read the value 0.0001 from the frontend?

Answer 1

ufixed datatypes are not supported yet. See the warning notice in here.

But you can save the number insolidity multiplied by 10**decimals, where decimals is the number of decimal points you want to use. When you retrieve the value in at the front end you just need to divide the returned number by 10**decimals.

I hope this helps.