String Handling Operations In A Programming
Gbogbo ọrọ náà
A program is handed the text AB-2481 and has to work out that the last four characters are a number, that the hyphen is in the right place, and that the whole thing is seven characters long. None of that is arithmetic and none of it is guesswork. Each step is one of a small set of operations on text, and this specification names seven of them.
This lesson covers all seven: finding the length of a string, finding the position of something inside it, taking a substring out of it, joining strings by concatenation, converting a character to its character code and back again, and the string conversion operations that turn text into numbers and numbers into text. Together they are how a program reads a reference code, splits a name into initials, validates a password and turns keyboard input into something it can add up.
Ebumnobi
- Understand and be able to use:
- length
- position
- substring
- concatenation
- convert character to character code
- convert character code to character
- string conversion operations.
Maapụ uche
E seela isiokwu a ka ị hụ otu echiche si ejikọta.
Mepee maapụ uche na ngwa
Akwụkwọ Ọmụmụ
Ndetu Nkuzi Zuru Ezu di na Ngwa Green Bridge
Nweta ngwa Green Bridge CBT na ekwenti gi ma o bu kompiuta maka ulo akwukwo IGCSE zuru oke: akwukwo ule ndi gara aga, usoro nyocha, eserese uche, kaadi omumu na nkuzi olu.
Nnyocha Ọmụmụ
Ekele diri gi maka imecha ihe karịrị na String Handling Operations In A Programming. Ugbu a na ị na-enyochakwa isi echiche na echiche ndị dị mkpa, ọ bụ oge iji nwalee ihe ị ma. Ngwa a na-enye ụdị ajụjụ ọmụmụ dị iche iche emebere iji kwado nghọta gị wee nyere gị aka ịmata otú ị ghọtara ihe ndị a kụziri.
Ị ga-ahụ ngwakọta nke ụdị ajụjụ dị iche iche, gụnyere ajụjụ chọrọ ịhọrọ otu n’ime ọtụtụ azịza, ajụjụ chọrọ mkpirisi azịza, na ajụjụ ede ede. A na-arụpụta ajụjụ ọ bụla nke ọma iji nwalee akụkụ dị iche iche nke ihe ọmụma gị na nkà nke ịtụgharị uche.
Jiri akụkụ a nke nyocha ka ohere iji kụziere ihe ị matara banyere isiokwu ahụ ma chọpụta ebe ọ bụla ị nwere ike ịchọ ọmụmụ ihe ọzọ. Ekwela ka nsogbu ọ bụla ị na-eche ihu mee ka ị daa mba; kama, lee ha anya dị ka ohere maka ịzụlite onwe gị na imeziwanye.
- What is the length of the string Green Bridge? A. 11 B. 12 C. 13 D. 2 Answer: B
- Positions are numbered from 0. What is the value of SUBSTRING("COMPUTER", 2, 3)? A. MPU B. OMP C. MPUT D. COM Answer: A
- The character code for A is 65. What is the character code for F? A. 66 B. 69 C. 70 D. 71 Answer: C
- Which operation is needed before a value read from a text file can be used in arithmetic? A. Concatenation B. Convert character to character code C. String to integer D. Substring Answer: C
- What is the result of the concatenation "7" + "3"? A. 10 B. 21 C. 73 D. 4 Answer: C
Rue ajuju ndi a n'ime ngwa ahu
Rue ajuju ndi a n'ime ngwa ahu
Akwụkwọ A Na-atụ Aro
Meecha Ajụjụ Ule Ọmarịcha
Ị chọrọ ime ajụjụ ule ọmarịcha gbasara String Handling Operations In A Programming? Budata ngwa Green Bridge CBT iji nweta ajụjụ ule ọmarịcha na nyocha zuru ezu gbasara isiokwu a.
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