This is true but there is a qualifier here: If a type name is used, it always needs to be enclosed in parentheses, whereas variable names and expressions can b

This is true but there is a qualifier here: If a type name is used, it always needs to be enclosed in parentheses, whereas variable names and expressions can be specified with or without parentheses. So long_struct_name *foo = malloc(sizeof long_struct_name) won't compile.