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What is meant by opening a data file
A data file is a file that can be read from or written to. Data files are particularly useful when large amounts of data are involved. Each line of a data file is called a record. The following is the first few records of the file ospots.dat (a file containing the total number of sunspots observed in a year during the years 1850-1975):
1850 66.6
1851 64.5
1852 54.1
1853 39.0
1854 20.6
To read from or write to a data file during the execution of a program, the file must first be opened with the function "fopen". This function takes two arguments - the first one is the path to your file, including the filename. So if your file sits in the same directory as your C source file, you can simply enter the filename in here . The second argument is another char *, and determines how the file is opened by your program. Finally, fopen returns a FILE pointer if the file was opened successfully, else it returns NULL.
What is locality of reference? Analysis of program represents that many instructions ion localized areas of the program are implemented repeatedly during some time period, and
Explain data rates in public switched telephone network. Data rates in PSTNs : A voice channel in a public switched telephone network is band restricted with a nominal bandwid
The I/O interface provides a technique for transferring information between external I/O devices and internal storage. Peripherals linked to a computer require special communicatio
Which of the fastest logic: TTL, ECL, CMOS and LSI ? Ans. The fastest logic family of all logic families ECL. High speeds are possible in ECL since the transistors a
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By using XNOR gate if the signals are similar then only the output will be one otherwise not.
What is a FIFO? FIFO is otherwise known as 'named pipes'. FIFO (first-in-first-out) is a particular file which is said to be data transient. Once data is read from named pipe,
Convert the given S-R flipflop to a D-flip flop. Ans: The Truth Table for S-R Flip-Flop is illustrated in Fig.(a) and truth table of D Flip-Flop is illustrated in Fig.(b)
What is a PCI bus? Discuss its aspects and usage. Peripheral Component Interconnect (PCI): This bus was developed by Intel and introduced in 1993. It is geared specifically to
Consider the situation in which the disk read/write head is currently located at track 45 (of tracks 0-255) and moving in the positive direction. Assume that the following track re
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