{"id":581,"date":"2023-02-28T15:29:55","date_gmt":"2023-02-28T15:29:55","guid":{"rendered":"https:\/\/blogs.glowscotland.org.uk\/es\/software\/?page_id=581"},"modified":"2023-03-02T15:45:27","modified_gmt":"2023-03-02T15:45:27","slug":"structure-diagrams","status":"publish","type":"page","link":"https:\/\/blogs.glowscotland.org.uk\/es\/software\/software-design-and-development\/week-6\/structure-diagrams\/","title":{"rendered":"Structure diagrams"},"content":{"rendered":"\n

A structure diagram is useful to show the flow of data in and out of modules. To read a structure diagram you start on the left most of each level and go downwards when possible.<\/p>\n\n\n\n

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\"Example
Example structure diagram<\/figcaption><\/figure>\n<\/div>\n\n\n\n
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# Program to find the total of 10 numbers\n\ntotal = 0\nfor counter in range(10):\n    number = int(input(\"Please enter a number between 0 and 100 \"))\n    while True:\n        if number >= 0 and number <= 100:\n            total += number\n            break;\n        else:\n            print(\"Number must be between 0 and 100\")\n            number = int(input(\"Please enter a number between 0 and 100 \"))\n\nprint(\"Total: \" + str(total))\n                 <\/code><\/pre>\n<\/div>\n<\/div>\n\n\n\n
So in the above diagram, you complete everything under the “Repeat 10 times” branch of the tree before going to the “Output total” branch.<\/p>\n\n\n\n
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\"Process
Process symbol<\/figcaption><\/figure><\/div>\n\n\n\n
Used to show that a process is needed. This will need code during implementation.<\/p>\n<\/div>\n\n\n\n
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\"Predefined
Predefined function symbol<\/figcaption><\/figure><\/div>\n\n\n\n
A function defined in another structure diagram or using a built in system function that does not require additional code.<\/p>\n<\/div>\n<\/div>\n\n\n\n
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\"Loop
Loop symbol<\/figcaption><\/figure><\/div>\n\n\n\n
Used to show repetition or iteration. The programmer will need to code the looping structure during implementation.<\/p>\n<\/div>\n\n\n\n
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\"Selection
Selection symbol<\/figcaption><\/figure><\/div>\n\n\n\n
Used to show there are different outcomes from this point. The programmer will need to code in conditional statements such as if or else.<\/p>\n<\/div>\n<\/div>\n\n\n\n
Next: User interface<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
A structure diagram is useful to show the flow of data in and out of modules. To read a structure diagram you start on the left most of each level and go downwards when possible. So in the above diagram, you complete everything under the “Repeat 10 times” branch of the tree before going to… Continue reading Structure diagrams<\/span><\/a><\/p>\n","protected":false},"author":5710,"featured_media":0,"parent":24,"menu_order":5,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-581","page","type-page","status-publish","hentry","entry"],"_links":{"self":[{"href":"https:\/\/blogs.glowscotland.org.uk\/es\/software\/wp-json\/wp\/v2\/pages\/581","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.glowscotland.org.uk\/es\/software\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/blogs.glowscotland.org.uk\/es\/software\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.glowscotland.org.uk\/es\/software\/wp-json\/wp\/v2\/users\/5710"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.glowscotland.org.uk\/es\/software\/wp-json\/wp\/v2\/comments?post=581"}],"version-history":[{"count":7,"href":"https:\/\/blogs.glowscotland.org.uk\/es\/software\/wp-json\/wp\/v2\/pages\/581\/revisions"}],"predecessor-version":[{"id":612,"href":"https:\/\/blogs.glowscotland.org.uk\/es\/software\/wp-json\/wp\/v2\/pages\/581\/revisions\/612"}],"up":[{"embeddable":true,"href":"https:\/\/blogs.glowscotland.org.uk\/es\/software\/wp-json\/wp\/v2\/pages\/24"}],"wp:attachment":[{"href":"https:\/\/blogs.glowscotland.org.uk\/es\/software\/wp-json\/wp\/v2\/media?parent=581"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}