'Indirection operator' presentation slideshows

Pointers

12. Pointers. Contents. Addresses and pointers Array names as pointers Pointer arithmetic Passing addresses Common programming errors. Addresses and Pointers. High-level languages use memory addresses throughout executable programs

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Outline

Outline. Review Functions Pointers Function calls Array Pointers Pointer Arrays Data Structures and dynamic Memory Function Pointers quicksort example. Functions. Functions enable grouping of commonly used code into a reusable and compact unit.

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CS1010: Programming Methodology comp.nus.sg/~cs1010/

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Pointer

Pointer. A variable that represent the location (rather than value) of a data item, such as variable or an array element It is used to pass information back and forth between function and its reference point It provides a way to return multiple data items from a function via function arguments

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Functions in C

Functions in C. Function Terminology. Identifier scope Function declaration, definition, and use Parameters and arguments Parameter order, number, and type Function prototype Input parameter, output parameter Pass by value, pass by reference. Sample Program. int a = 1;

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Pointers

Pointers A pointer type variable holds the address of a data object or a function. A pointer can refer to an object of any one data type ; it cannot refer to a bit field or a reference. A pointer is classified as a scalar type, which means that it can hold only one value at a time.

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Pointers

Pointers.

262 views • 14 slides