Command Line Arguments and Makefiles in C Function Pointers in C CSE 2421 Required Reading: Pointers On C, Chapter 13, Sections 13.2 through 13.3 Pointers – Review We’ve seen pointers to simple types before, e.g.: int *ptr1; float *ptr2; char *ptr3; We also saw examples of pointers to pointers (these can be used as pointers […]
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Strings in C Strings in C CSE 2421 Required reading: Pointers on C, Chapter 9 through 9.4, 9.11 and 9.12 Strings in C – Intro 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
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Comma splices Intro to C CSE 2421 1 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 has to do explicit memory management when it is required, and failure to do so
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PowerPoint Presentation CSE 2421 Counting in Hex & Integer Multiplication and Division Counting in Hex When examining hexadecimal numbers, as we often do with addresses, we will need to be able to do basic arithmetic operations, such as counting up (addition) or counting down (subtraction) when working in assembler. The principles, of course, are exactly
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Structures in C Structures in C CSE 2421 Required Reading: Pointers On C, Chapter 10, through Section 10.3 Recall that ANSI C has a set of default data types: char, int, long, float, double. An aggregate data type is one that can hold more than one individual piece of data at a time. Recall that
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PowerPoint Presentation CSE 2421 The C Language – Part 1.2 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 lvalue/Lvalue/L-value: That operand found on the left side of the assignment operator. All L-values must be
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PowerPoint Presentation CSE 2421 X86 Assembly Language – Part 1 Required Reading: Computer Systems: A Programmer’s Perspective, 3rd Edition Chapter 3 thru 3.2.1 (inclusive), Section 3.3 through 3.4.2 (inclusive) Computer Architecture The modern meaning of the term computer architecture covers three aspects of computer design: -instruction set architecture, -computer organization and -computer hardware. • Instruction
PowerPoint Presentation CSE 2421 The C Language – Part 4, Control Structures Required Reading: Pointers on C, Chapter 4 (skim is likely good enough), Section 5.1.9 1 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 operator Enumerated data types
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Introduction to Computer Systems 15-213/18-243, spring 2009 CSE 2421 Array and Structure Storage and Access 1 Today Arrays One-dimensional Multi-dimensional (nested) Multi-level Structures Allocation Access Alignment 2 Pointer arithmetic If p is a pointer to data type T And, the value of p (i.e., an address) is x_p Then, then p+i has value x_p +
PowerPoint Presentation CSE 2421 The C Language – Part 3 – I/O Required Reading: Pointers on C, Section 15.8, 15.8.1,15.10 through 15.10.4 inclusive Linux/Unix systems use the ASCII character encoding format Most IBM products use the EBCDIC character encoding format There is also a character encoding format called Unicode For this class we will only
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