Question

Matlab work. Pleaae dont copy from any source.

Write a function that will accept a structure as an argument and return two cell arrays containing the names of the fields of that structure and the data types of each field. Be sure to check that the input argument is a structure, and generate an error message if it is not.

Answer 1

A structure array is a data type that groups related data using data containers called fields. Each field can contain any type of data. Access data in a field using dot notation of the form structName.fieldName.

Creation

When you have data to put into a new structure, create the structure using dot notation to name its fields one at a time:

s.a = 1;
s.b = {'A','B','C'}

s = struct with fields:
    a: 1
    b: {'A'  'B'  'C'}

You also can create a structure array using the struct function, described below. You can specify many fields simultaneously, or create a nonscalar structure array.

Syntax

s = struct

s = struct(field,value)

s = struct(field1,value1,...,fieldN,valueN)

s = struct([])

s = struct(obj)

Description

s = struct creates a scalar (1-by-1) structure with no fields.

example

s = struct(field,value) creates a structure array with the specified field and value. The value input argument can be any data type, such as a numeric, logical, character, or cell array.

• If value is not a cell array, or if value is a scalar cell array, then s is a scalar structure. For instance, s = struct('a',[1 2 3]) creates a 1-by-1 structure, where s.a = [1 2 3].

• If value is a nonscalar cell array, then s is a structure array with the same dimensions as value. Each element of s contains the corresponding element of value. For example, s = struct('x',{'a','b'}) returns s(1).x = 'a' and s(2).x = 'b'.

• If value is an empty cell array {}, then s is an empty (0-by-0) structure.