{"id":816,"date":"2020-09-07T04:11:13","date_gmt":"2020-09-07T04:11:13","guid":{"rendered":"http:\/\/learnlearn.uk\/alevelcs\/?page_id=816"},"modified":"2020-09-07T06:08:27","modified_gmt":"2020-09-07T06:08:27","slug":"functions-procedures","status":"publish","type":"page","link":"https:\/\/learnlearn.uk\/alevelcs\/functions-procedures\/","title":{"rendered":"Functions & Procedures"},"content":{"rendered":"
\n

Procedures<\/h2>\n
\n\n

Procedures<\/h3>\n

A procedure is a named section of code that can be called(run) anywhere within a program.<\/p>\n

All procedures have 2 parts:<\/p>\n

The Definition<\/strong><\/p>\n

This is where the code section is separated from the rest of the code and given a name. Defining a procedure does nothing until the code is called.<\/p>\n

def hello_world():\r\n\u00a0 \u00a0 print(\"Nice to meet you world\")<\/pre>\n
The Call<\/strong><\/p>\n
We run a procedure by calling\u00a0 it by its name.<\/p>\n
hello_world() #This will run the hello_world() procedure.<\/pre>\n
You can call a function as many times as you like:<\/p>\n
while True:\r\n\u00a0 \u00a0 hello_world() #This will keep running the function inifitely.<\/pre>\n
 <\/p>\n\n<\/div>
Functions<\/h2>\n
\n\n
Functions<\/h3>\n
A function is similar to a procedure but with one key difference – it returns a value (or object) to the line where the function was called.<\/p>\n
def gimme_five():\r\n\u00a0 \u00a0 return 5<\/pre>\n
You can choose to do whatever you like with the return value.<\/p>\n
print(gimme_five()) #This will print out the number 5\r\n\r\nx = gimme_five() #This will take the return value 5 and set x to be 5<\/pre>\n
 <\/p>\n
 <\/p>\n
 <\/p>\n\n<\/div>
Input Parameters<\/h2>\n
\n\n
 <\/p>\n
 <\/p>\n
 <\/p>\n\n<\/div>
Practice<\/h2>\n
\n\n
You can practice writing your own functions using these Python functions challenges.<\/a><\/p>\n
 <\/p>\n
Exam Questions<\/p>\n
June 16 Paper 22 Questions 2,3<\/a><\/p>\n
 <\/p>\n<\/div><\/div>\n
 <\/p>\n","protected":false},"excerpt":{"rendered":"
Procedures A procedure is a named section of code that can be called(run) anywhere within a program. All procedures have 2 parts: The Definition This is where the code section is separated from the rest of the code and given a name. Defining a procedure does nothing until the code is called. def hello_world(): \u00a0… Read More »Functions & Procedures<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":70,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":""},"yoast_head":"\nFunctions & Procedures - A Level Computer Science<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/learnlearn.uk\/alevelcs\/functions-procedures\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Functions & Procedures - A Level Computer Science\" \/>\n<meta property=\"og:description\" content=\"Procedures A procedure is a named section of code that can be called(run) anywhere within a program. 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