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Lecture 13: Character Strings, Pointers to Pointers, Command Line Arguments

Jul 05, 2012

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Lecture 13: Outline. Character strings.String manipulation functions.Pointers to Pointers.Double indirectionCommand Line Arguments.Process command line for programs.. Character Strings. A sequence of character constants such as

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Lecture 13: Character Strings, Pointers to Pointers, Command Line Arguments

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1. Lecture 13: Character Strings, Pointers to Pointers, Command Line Arguments Homework: Read Chapter 12 of Barclay

2. Lecture 13: Outline Character strings. String manipulation functions. Pointers to Pointers. Double indirection Command Line Arguments. Process command line for programs.

3. Character Strings A sequence of character constants such as �This is a string !�. Each character of the string is a character constant in a consecutive memory block. Representation in memory:

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Arrays

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Arrays, Strings, and Pointers

Arrays, Strings, and Pointers. CSE 2451 Rong Shi. Arrays. Store many values of the same type in adjacent memory locations Declaration &lt;type&gt; &lt;name&gt; [&lt;size&gt;] Examples: int rgb [3]; double percents [10]; char name[20 ]; int s = 4; int trythis [s]; // not valid for most compilers

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Referencing addresses, Pointers

Referencing addresses, Pointers. Pointer definitions, usage, operations, arrays of pointers, function pointers. The Pointer Concept and Usage in C. Concept of Pointer as memory address Pointer definitions Usage of pointers Operations on pointers Function arguments: Call by Value/Reference

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Pointers

Pointers. Introduction. Pointers Powerful, but difficult to master Simulate pass-by-reference Close relationship with arrays and strings. count. countPtr. count. 7. 7. Pointer Variable Declarations and Initialization. Pointer variables Contain memory addresses as values

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Pointers

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More Pointers and Arrays

More Pointers and Arrays. Kernighan/Ritchie: Kelley/Pohl:. Chapter 5 Chapter 6. Lecture Overview. Strings and characters String functions in the standard library sizeof Revisited Multidimensional arrays Pointers to pointers and pointer arrays Pointers to functions. Strings.

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Pointers and Strings

Pointers and Strings. Outline sizeOf operator Pointer Expressions and Pointer Arithmetic Relationship Between Pointers and Arrays Arrays of Pointers Case Study: Card Shuffling and Dealing Simulation. sizeOf operator. sizeof Unary operator returns size of operand in bytes

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Pointers

Pointers. Topics. Pointers Pointer Arithmetic Pointers and Arrays. Objectives. on completion of this topic, students should be able to:. Correctly use pointers in a C++ program * Take the address of a variable * Dereference a pointer * Do pointer arithmetic

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Pointers

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Command Line Arguments

Command Line Arguments. Dr. David A. Gaitros COP3330 Fall Term 2008. C/C++ Command Line Arguments. When executing a program in either C or C++ there is a way to pass command line arguments. Passed a character arrays. Each parameter separated by a space

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Command Line Arguments

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C Pointers

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Chapter 8 Pointers

Chapter 8 Pointers. Pointers. A pointer is a variable that contains the address of a variable. Pointers provide a powerful and flexible method for manipulating data in your programs; but they are difficult to master. Benefits of Pointers.

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A First Book of ANSI C Fourth Edition

A First Book of ANSI C Fourth Edition. Chapter 11 Arrays, Addresses, and Pointers. Objectives. Array Names as Pointers Manipulating Pointers Passing and Using Array Addresses Processing Strings Using Pointers Creating Strings Using Pointers Common Programming and Compiler Errors.

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Pointers

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Pointers

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Lecture 13: Character Strings, Pointers to Pointers, Command Line Arguments

Lecture 13: Character Strings, Pointers to Pointers, Command Line Arguments

Presentation Transcript

C Strings

Arrays

Arrays, Strings, and Pointers

Referencing addresses, Pointers

Pointers

Pointers

Pointers

More Pointers and Arrays

Pointers and Strings

Pointers

Pointers

Command Line Arguments

Command Line Arguments

C Pointers

Chapter 8 Pointers

A First Book of ANSI C Fourth Edition

Pointers

Pointers

CSE 20232 Lecture 26 – Pointers

Lecture 7 C Pointers

Arrays &amp;amp; Pointers &amp;amp; Strings

Pointers

Arrays & Pointers & Strings