OSU CSE 2421 Required Reading: Pointers on C, Beginning of Chapter 3 through Section 3.1.3 J.E.Jones OSU CSE 2421 POINTERS ◦ At last, we arrive at THE MOST DREADED WORD in the lexicon of the C programming student*. Pointers are indeed so dreaded that Java has completely done away with pointers and wrapped their […]
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OSU CSE 2421 Required Reading: Computer Systems: A Programmer’s Perspective, 3rd Edition, Chapter 1 thru Section 1.3 Pointers on C, Chapter 5 thru Section 5.1.3, 5.3 through the end of the chapter J.E.Jones OSU CSE 2421 lvalue/Lvalue/L-value: That operand found on the left side of the assignment operator. ◦ All L-values must be modifiable
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OSU CSE 2421 Required Reading: Pointers on C, Chapter 4 (skim is likely good enough), Section 5.1.9 J.E.Jones OSU CSE 2421 Loop constructs in C ◦ for loops ◦ while loops ◦ do while loops ◦ break and continue Conditional statements in C ◦ if ◦ switch-case Boolean issues The comma
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OSU CSE 2421 Required Reading: Pointers on C, Section 15.8, 15.8.1,15.10 through 15.10.4 inclusive J.E.Jones OSU CSE 2421 Chalk Talk ◦ Simplified hardware architecture ◦ In your mind’s eye… PVC Pipe Tennis Balls J. E. Jones OSU CSE 2421 Linux/Unix systems use the ASCII character encoding format Most IBM products use the
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J.E.Jones OSU CSE 2421 OSU CSE 2421 • C is procedural, not object-oriented • C is fully compiled (to machine code), not to byte-code • C allows direct manipulation of memory (via pointers) • C does not have garbage collection; the software writer must do explicit memory management when it is required, and failure to
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OSU CSE 2421 Required Reading: Pointers On C, Chapter 3, Sections 3.5 through 3.10 with a special interest in Table 3.4. J.E.Jones OSU CSE 2421 When programming in any language, it is usually important to know what type of memory holds your data ◦ Stack ◦ Heap ◦ Disk ◦ Read-Only Memory, etc.
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OSU CSE 2421 CSE 2421 – Systems I Introduction to Low-level Programming and Computer Organization Janis Jones jones.5684@osu.edu http://clipartmag.com/cartoon-sunshine-pictures https://creativeartslifestyle.com/all-products/word-stencil-welcome-english-vintage-arched-9-1-2-x-2-5-8-word-size/ J.E.Jones OSU CSE 2421 Computer Systems: A Programmer’s Perspective, 3rd Edition, by Randall E. Bryant and David R. O’Hallaron, (Required) ◦ This link contains all known errors to the 3rd edition of
OSU CSE 2421 Required Reading: Pointers On C, Chapter 10, through Section 10.3 J.E.Jones OSU CSE 2421 • Recall that ANSI C has a set of default data types: char, short, int, long, float, double. • An aggregate data type is one that can hold more than one individual piece of data at a time.
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OSU CSE 2421 Required reading: Pointers on C, Chapter 9 through 9.4, 9.11 and 9.12 J.E.Jones OSU CSE 2421 ANSI C does not have a string data type. In ANSI C, strings are stored as sequences of ASCII characters in memory declared as an array of char data type values (i.e., a character
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OSU CSE 2421 Required Reading: Computer Systems: A Programmer’s Perspective, 3rd Edition, Chapter 2 thru Section 2.1.2 J.E.Jones OSU CSE 2421 > right-shift & bitwise AND Bitwise operators | bitwise OR ^ bitwise exclusive-OR ~ bitwise NOT (complement, not negation) BITWISE OPERATORS: 0 is 0 1 is 1 && logical AND || logical OR
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