The 2 ways to transfer ERC20 Tokens in Solidity

With ERC20 tokens, there are 2 APIs to transfer tokens:

• transfer() (simple transfers)
• transferFrom() (delegated transfer)

For transfer(), there are 3 steps:

1. Import the ERC20 token
2. Import the address of the token
3. Call transfer()

For transfer(), there are 4 steps:

1. Import the ERC20 token
2. Import the address of the token
3. Call approve()
4. Call transferFrom()

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