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etherAndWei.md

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Ether (ETH) is a cryptocurrency. Ether is also used to pay fees for using the Ethereum network, like making transactions in the form of sending Ether to an address or interacting with an Ethereum application.

Ether Units

To specify a unit of Ether, we can add the suffixes wei, gwei, or ether to a literal number.

wei

Wei is the smallest subunit of Ether, named after the cryptographer Wei Dai. Ether numbers without a suffix are treated as wei (line 7).

gwei

One gwei (giga-wei) is equal to 1,000,000,000 (10^9) wei.

ether

One ether is equal to 1,000,000,000,000,000,000 (10^18) wei (line 11).

Watch a video tutorial on Ether and Wei.

⭐️ Assignment

  1. Create a public uint called oneGwei and set it to 1 gwei.
  2. Create a public bool called isOneGwei and set it to the result of a comparison operation between 1 gwei and 10^9.

Tip: Look at how this is written for gwei and ether in the contract.