Structured Programming
Akopọ
Two programs do the same job. One is nine hundred lines in a single block, with a handful of variables that anything can change and a control flow that jumps forwards and backwards. The other is thirty named blocks of thirty lines, each one handed exactly what it needs and handing back exactly what it produced. Both work today. Only one of them can be changed next year by somebody who did not write it.
That difference is what this topic is about. The structured approach is not a language feature or a syntax rule; it is a way of building programs, and the specification names its parts precisely: modularised programming, clear and well documented interfaces made of local variables and parameters, and return values. This lesson describes each of those, explains the advantages the approach brings, and shows what the alternative actually looks like, because the advantages are hard to feel until you have seen the problem they solve.
Awọn Afojusun
- Describe the structured approach to programming.
- Explain the advantages of the structured approach.
Àwòrán ọpọlọ
A ti ṣe àwòrán kókó yìí kí o lè rí bí àwọn èrò ṣe so pọ̀.
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Oriire fun ipari ẹkọ lori Structured Programming. Ni bayi ti o ti ṣawari naa awọn imọran bọtini ati awọn imọran, o to akoko lati fi imọ rẹ si idanwo. Ẹka yii nfunni ni ọpọlọpọ awọn adaṣe awọn ibeere ti a ṣe lati fun oye rẹ lokun ati ṣe iranlọwọ fun ọ lati ṣe iwọn oye ohun elo naa.
Iwọ yoo pade adalu awọn iru ibeere, pẹlu awọn ibeere olumulo pupọ, awọn ibeere idahun kukuru, ati awọn ibeere iwe kikọ. Gbogbo ibeere kọọkan ni a ṣe pẹlu iṣaro lati ṣe ayẹwo awọn ẹya oriṣiriṣi ti imọ rẹ ati awọn ogbon ironu pataki.
Lo ise abala yii gege bi anfaani lati mu oye re lori koko-ọrọ naa lagbara ati lati ṣe idanimọ eyikeyi agbegbe ti o le nilo afikun ikẹkọ. Maṣe jẹ ki awọn italaya eyikeyi ti o ba pade da ọ lójú; dipo, wo wọn gẹgẹ bi awọn anfaani fun idagbasoke ati ilọsiwaju.
- Which of these is NOT part of the structured approach as described in the specification? A. Clear, well documented interfaces B. Modularised programming C. Return values D. Using global variables to share data between modules Answer: D
- What is a module? A. A file that stores program data B. A self-contained part of a program that performs one identifiable task C. A variable that can be seen throughout a program D. A loop that repeats a fixed number of times Answer: B
- Which term does the specification say examinable material will use for both arguments and parameters? A. Argument B. Interface C. Parameter D. Variable Answer: C
- Why does the structured approach make errors easier to find? A. Programs written this way contain fewer statements B. A local variable can only have been changed inside its own module C. The compiler checks structured programs more thoroughly D. Structured programs run more slowly, so faults are visible Answer: B
- A module can be rewritten without affecting any of the code that calls it, provided that: A. It is called only once B. It contains no loops C. It uses only global variables D. Its interface is unchanged Answer: D
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Ṣe o fẹ ṣe adaṣe awọn ibeere idanwo adaṣe nipa Structured Programming? Ṣe igbasilẹ ohun elo Green Bridge CBT lati wọle si awọn ibeere idanwo adaṣe ati awọn ayẹwo adaṣe kikun fun koko-ọrọ yii.
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