Ethereum Classic is a decentralized open source decentralized computing platform based on blockchain technology and the original ethereum code.
The ethereum classic blockchain is exactly the same as the ethereum until the 192000 block, where the hard fork occurred.
ethereum classic is a continuation of the original ethereum blockchain, without any external interference or manipulation of transactions.
ETC is a programmable decentralized blockchain like ethereum, which has the same functionality as ethereum in terms of smart contracts and decentralized software.
Etc, like eth, also uses Solidity programming language.