{"id":221,"date":"2022-05-10T21:41:09","date_gmt":"2022-05-10T20:41:09","guid":{"rendered":"https:\/\/blogs.glowscotland.org.uk\/glowblogs\/phsn5computingscience\/?page_id=221"},"modified":"2022-10-18T19:23:08","modified_gmt":"2022-10-18T18:23:08","slug":"data-types-and-structures","status":"publish","type":"page","link":"https:\/\/blogs.glowscotland.org.uk\/glowblogs\/phsn5computingscience\/data-types-and-structures\/","title":{"rendered":"Data Types and Structures"},"content":{"rendered":"

Variable<\/h2>\n

A variable is a storage location used to hold a value required by a program. Each variable has a unique name. The data value held in a variable may change when a program is run\"\"<\/p>\n

 <\/p>\n

Data Types<\/h2>\n

The type of data that will be sored in a variable must also be defined.<\/span><\/strong><\/p>\n

\"\"<\/p>\n

Arrays<\/h2>\n

An array is an example of a data structure<\/strong>.\u00a0 Often a program will have to store lots of information at\u00a0the one\u00a0time.\u200b<\/p>\n

Arrays allow the programmer to store more than one\u00a0piece of data within a single data structure.\u200b\u00a0 Data that is stored in an array must\u00a0be\u00a0the same data\u00a0type, an array of integers, an of strings\u00a0etc\u200b. \u00a0Arrays must be given suitable identifiers just like a\u00a0variable<\/p>\n

Each piece of information stored in an array needs to be\u00a0given a number so that it can be uniquely identified.\u00a0 The number is called an \u201cindex<\/strong>\u201d.\u00a0 The index always starts at zero.<\/p>\n

\"\"<\/p>\n

Creating an Array<\/h2>\n

Subjectlist=\u00a0[\u201cMaths\u201d,\u201dEnglish\u201d,\u201dFrench\u201d,\u201dComputing\u201d]<\/p>\n

\"\"<\/p>\n

Displaying an array<\/b><\/span><\/h2>\n

A For Loop <\/b>is an arrays <\/b>best friend for one reason; the counter<\/b>!<\/p>\n

As we should remember each For Loop <\/b>has a counter <\/b>and every time the loop is completed the counter <\/b>increases by one. This is extremely useful when\u00a0 displaying information <\/b>from arrays<\/b>.<\/p>\n

\"\"<\/a><\/p>\n

Populating an array<\/span><\/h2>\n

This allows the program to ask the user a question multiple times and saving the inputs into different indexes <\/span>of the array<\/span>. As the counter <\/span>increases by one each time, it is perfect to use as a reference for the index<\/span>.<\/p>\n

\"\"<\/a><\/p>\n

 <\/p>\n

Array with a Running Total<\/span><\/h2>\n

The example that is shown below is a program that uses a loop to access each element of an array to calculate the total value within the array.<\/p>\n

\"\"<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Variable A variable is a storage location used to hold a value required by a program. Each variable has a unique name. The data value held in a variable may change when a program is run   Data Types The type of data that will be sored in a variable must also be defined. Arrays […]<\/p>\n","protected":false},"author":79984,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-221","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/blogs.glowscotland.org.uk\/glowblogs\/phsn5computingscience\/wp-json\/wp\/v2\/pages\/221","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.glowscotland.org.uk\/glowblogs\/phsn5computingscience\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/blogs.glowscotland.org.uk\/glowblogs\/phsn5computingscience\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.glowscotland.org.uk\/glowblogs\/phsn5computingscience\/wp-json\/wp\/v2\/users\/79984"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.glowscotland.org.uk\/glowblogs\/phsn5computingscience\/wp-json\/wp\/v2\/comments?post=221"}],"version-history":[{"count":11,"href":"https:\/\/blogs.glowscotland.org.uk\/glowblogs\/phsn5computingscience\/wp-json\/wp\/v2\/pages\/221\/revisions"}],"predecessor-version":[{"id":580,"href":"https:\/\/blogs.glowscotland.org.uk\/glowblogs\/phsn5computingscience\/wp-json\/wp\/v2\/pages\/221\/revisions\/580"}],"wp:attachment":[{"href":"https:\/\/blogs.glowscotland.org.uk\/glowblogs\/phsn5computingscience\/wp-json\/wp\/v2\/media?parent=221"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}