Subprograms
Bayani Gaba-gaba
A long program that repeats the same block of code in five different places is fragile: fix a bug in one copy and the other four still carry it. Subprograms solve this by giving a named, reusable block of code a single home, one that any part of the program can call on whenever it is needed.
In this lesson you will learn the difference between procedures and functions, how to pass data into a subprogram using parameters and get data back out using a return value, and how local and global scope decide which parts of a program can see which variables. Every example is written in Python, one of the languages you can use for the Paper 2 practical programming exam.
Manufura
- Understand the benefits of using subprograms and be able to write code that uses user-written and pre-existing (built-in, library) subprograms
- Understand the concept of passing data into and out of subprograms (procedures, functions)
- Be able to create subprograms that use parameters
Takardar Darasi
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Nazarin Darasi
Barka da kammala darasi akan Subprograms. Yanzu da kuka bincika mahimman raayoyi da raayoyi, lokaci yayi da zaku gwada ilimin ku. Wannan sashe yana ba da ayyuka iri-iri Tambayoyin da aka tsara don ƙarfafa fahimtar ku da kuma taimaka muku auna fahimtar ku game da kayan.
Za ka gamu da haɗe-haɗen nau'ikan tambayoyi, ciki har da tambayoyin zaɓi da yawa, tambayoyin gajeren amsa, da tambayoyin rubutu. Kowace tambaya an ƙirƙira ta da kyau don auna fannoni daban-daban na iliminka da ƙwarewar tunani mai zurfi.
Yi wannan ɓangaren na kimantawa a matsayin wata dama don ƙarfafa fahimtarka kan batun kuma don gano duk wani yanki da kake buƙatar ƙarin karatu. Kada ka yanke ƙauna da duk wani ƙalubale da ka fuskanta; maimakon haka, ka kallesu a matsayin damar haɓaka da ingantawa.
- Which keyword does a Python subprogram use to send a value back to the code that called it? A) global B) def C) return D) import Answer: C
- In def add(a, b): return a + b, what are a and b called? A) Arguments B) Parameters C) Return values D) Global variables Answer: B
- Which of these best describes a procedure? A) A subprogram that always returns a numeric value B) A subprogram that carries out a task but does not return a value C) A subprogram that can only be called once D) A built-in Python keyword Answer: B
- A variable is created inside a function using an assignment statement and is never declared global. What is its scope? A) It is global and can be read anywhere B) It is local to that function only C) It exists for the whole program but only after the function is called D) It has no scope in Python Answer: B
- Which statement must appear inside a subprogram before it can change the value of a variable defined outside every subprogram? A) local B) return C) global D) import Answer: C
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Akwai a cikin manhajar Green Bridge
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Yi Aikin Tambayoyin Gwaji
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