how to transfer native SOL from program to user

Question

I have SOL in my program account. Is it possible to transfer that native (NOT WSOL) SOL to user?

If yes, How?

Answer 1

You can do something like this with an account that the program owns. The syntax used to access accounts is slightly anchor specific but the idea works in for regular solana programs too.

    let authority_lamports = ctx.accounts.authority.lamports();
    **ctx.accounts.authority.lamports.borrow_mut() = authority_lamports
        .checked_add(ctx.accounts.your_program_account.lamports())
        .unwrap();

    **ctx.accounts.your_program_account.lamports.borrow_mut() = 0;

Answer 2

    // creating SOL transfer instruction
    let ix = anchor_lang::solana_program::system_instruction::transfer(
        from_pubkey, 
        &to_pubkey, 
        amount
    );

    // invoking SOL transfer instruction
    anchor_lang::solana_program::program::invoke(
        &ix,
        &[
            // from
            ctx.accounts.from_account.to_account_info(),
            // to
            ctx.accounts.to_account.to_account_info(),
        ]
    )?;

I think this should work for programs aswell. Ofcourse this would fail if amount is higher than balance or the "from" pubkey is not the signer