ARRAYS

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FUNCTIONS

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Summary of Graphing - MAT 271

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Pre-calc

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Unit 1 - Functions: Characteristics and Properties

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ARRAYS

C++ Arrays in Detail

Return array from functions

C++ allows a function to return an array.

Passing arrays to functions

You can pass to the function a pointer to an array by specifying the array's name without an index.

Pointer to an array

You can generate a pointer to the first element of an array by simply specifying the array name, without any index.

Multi-dimensional arrays

C++ supports multidimensional arrays. The simplest form of the multidimensional array is the two-dimensional array.

Arrays are important to C++ and should need lots of more detail

Initializing Arrays

double balance[] = {1000.0, 2.0, 3.4, 17.0, 50.0};

array just big enough to hold the initialization is created

The number of values between braces { } can not be larger than the number of elements

Exp:double balance[5] = {1000.0, 2.0, 3.4, 17.0, 50.0};

You can initialize C++ array elements either one by one or using a single statement

Accessing Array Elements

This is done by placing the index of the element within square brackets after the name of the array.

An element is accessed by indexing the array name.

Declaring Arrays

Subtopic

single-dimension array.

EX:to declare a 10-element array called balance of type double

type can be any valid C++ data type

arraySize must be an integer constant greater than zero

number of elements required

the type of the elements