Function declaration for main. The type declarations for the function parameters default to int, but can be specified outside of the parens before the curly bra

Function declaration for main. The type declarations for the function parameters default to int, but can be specified outside of the parens before the curly brace. The int argv[]; is where the declaration for argv is happening and is being declared as an pointer for ints. You can also see elsewhere in the code where they are passing pointer addresses (as int params) into functions and then using the address to build pointers referencing that data.