File Handling
Muhtasari
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.
Malengo
- 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
Maelezo ya Somo
Inapatikana kwenye programu ya Green Bridge
Pakua programu ya Green Bridge CBT kwenye simu yako au kompyuta yako ili kupata maelezo kamili ya masomo, maswali ya mazoezi, na mengi zaidi.
Tathmini ya Somo
Hongera kwa kukamilisha somo la File Handling. Sasa kwa kuwa umechunguza dhana na mawazo muhimu, ni wakati wa kuweka ujuzi wako kwa mtihani. Sehemu hii inatoa mazoezi mbalimbali maswali yaliyoundwa ili kuimarisha uelewaji wako na kukusaidia kupima ufahamu wako wa nyenzo.
Utakutana na mchanganyiko wa aina mbalimbali za maswali, ikiwemo maswali ya kuchagua jibu sahihi, maswali ya majibu mafupi, na maswali ya insha. Kila swali limebuniwa kwa umakini ili kupima vipengele tofauti vya maarifa yako na ujuzi wa kufikiri kwa makini.
Tumia sehemu hii ya tathmini kama fursa ya kuimarisha uelewa wako wa mada na kubaini maeneo yoyote ambapo unaweza kuhitaji kusoma zaidi. Usikatishwe tamaa na changamoto zozote utakazokutana nazo; badala yake, zitazame kama fursa za kukua na kuboresha.
- 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
Inapatikana kwenye programu ya Green Bridge
Pakua programu ya Green Bridge CBT kwenye simu yako au kompyuta yako ili kupata maelezo kamili ya masomo, maswali ya mazoezi, na mengi zaidi.
Inapatikana kwenye programu ya Green Bridge
Pakua programu ya Green Bridge CBT kwenye simu yako au kompyuta yako ili kupata maelezo kamili ya masomo, maswali ya mazoezi, na mengi zaidi.
Vitabu Vinavyopendekezwa
Fanya Mazoezi ya Maswali ya Majaribio
Ungependa kufanya mazoezi ya maswali ya majaribio kuhusu File Handling? Pakua programu ya Green Bridge CBT ili kupata maswali ya majaribio na tathmini kamili za mazoezi kuhusu mada hii.
Pakua Programu Kwenye Google Playstore
Kila kitu unachohitaji ili kufaulu katika JAMB, WAEC & NECO.
