Both the utmp file and any directory are organized as a sequence of structs. Consider the two structs definitioned here: or the same sizes? struct { char a; int b; char c; } one; struct { char a; char c; int b; } two; Which of the following is true? If you don't know the answer (we did discuss this in class), experiment in order to find the answer. struct one takes up more memory than struct two. struct two takes up more memory than struct one. They both take up the same amout of memory.

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Variables and Constant

Constants and variables are widely used in mathematical equations and expressions. They are also commonly found in the domain of programming, where each language has its own way to differentiate between a constant and a variable. Since they have all sorts of applications, knowing their differences is a good place to start.