Output in C Programming
When we say Output, it means to display some data on screen, printer, or in any file. C programming provides a set of built-in functions to output the data on the computer screen as well as to save it in text or binary files.
Opening Modes for Files
How do you open a file in read and write mode in c? There are many modes for opening a file:
- r – open a file in read mode
- w – opens or create a text file in write mode
- a – opens a file in append mode
- r+ – opens a file in both read and write mode
- a+ – opens a file in both read and write mode
- w+ – opens a file in both read and write mode
Stream Buffers
Riguardo a questo, what is __ fpurge stdin? The _fpurge() function requests that any pending data in the stream be discarded. Similarly, any data that has been pushed back into the steam with ungetc() will also be discarded.
Buffering a Stream
Buffering is the process of preloading data into a reserved area of memory that’s called a buffer. In the context of streaming video or audio, buffering is when the software downloads a certain amount of data before it begins playing the video or music.
Declaring a Buffer
How do you declare a buffer? Declare a buffer size, traditionally a power of two, like 2048, and read the file into it in chunks, then run your logic on the chunk each time you read a block. You then use constant memory, can read any size file, and don’t have to guess.