File Handling
Bayani Gaba-gaba
When a program stops, everything it was holding in memory vanishes. So how does a game remember your progress, or a program keep a high score between sessions? The answer is file handling: writing data out to a file that survives after the program ends, and reading it back when the program runs again.
In this lesson you will learn why programs store data in files, then learn the standard pseudocode for opening, reading from, writing to and closing a file. You will trace small routines that save and reload data so you can write file-handling code with confidence in the exam.
Manufura
- 1 Understand the purpose of storing data in a file to be used by a program
- 2 Open, close and use a file for reading and writing
Takardar Darasi
Akwai a cikin manhajar Green Bridge
Zazzage manhajar Green Bridge CBT a wayar ka ko kwamfyuta ka don samun cikakkiyar bayanan darasi, tambayoyin aiki, da ƙari.
Nazarin Darasi
Barka da kammala darasi akan File Handling. 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.
- Why does a program store data in a file rather than only in a variable? A. files run faster than variables B. data in a variable is lost when the program ends, but a file keeps it C. variables cannot hold numbers D. files do not need to be opened Answer: B
- Which pseudocode keyword opens a file ready to read from it? A. WRITEFILE B. CLOSEFILE C. OPENFILE name FOR READ D. EOF Answer: C
- What does opening a file FOR WRITE do to data already in the file? A. appends to the end B. leaves it unchanged C. overwrites it D. encrypts it Answer: C
- Which statement saves changes and frees a file after use? A. OPENFILE B. READFILE C. WRITEFILE D. CLOSEFILE Answer: D
- What does EOF(name) return when the end of the file is reached? A. the last line B. FALSE C. TRUE D. the filename Answer: C
Akwai a cikin manhajar Green Bridge
Zazzage manhajar Green Bridge CBT a wayar ka ko kwamfyuta ka don samun cikakkiyar bayanan darasi, tambayoyin aiki, da ƙari.
Akwai a cikin manhajar Green Bridge
Zazzage manhajar Green Bridge CBT a wayar ka ko kwamfyuta ka don samun cikakkiyar bayanan darasi, tambayoyin aiki, da ƙari.
Littattafan da ake ba da shawarar karantawa
Yi Aikin Tambayoyin Gwaji
Kana son yin aikin tambayoyin gwaji kan File Handling? Sauke manhajar Green Bridge CBT don samun tambayoyin gwaji da cikakkun jarrabawa akan wannan batu.
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Duk abin da kake buƙata don yin fice a JAMB, WAEC & NECO.
