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Lecture

File Handling in C: Basics and Common Issues

In course

ME-213: Programmation pour ingénieur

Mettre en pratique les bases de la programmation vues au semestre précédent. Développer un logiciel structuré. Méthode de debug d'un logiciel. Introduction à la programmation scientifique. Introduction à l'instrumentation virtuelle. ...

Description

This lecture covers the basics of file handling in C, including the differences between binary and text files, common issues like strange characters when opening files on different machines, and the importance of considering Endianess and newline characters. It also discusses standard functions like fprintf(), fscanf(), and fgets(), as well as the use of wide characters for extended characters. The lecture concludes with examples of file paths, command line parameters, and bitwise operations in C.

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Instructor

Christophe Salzmann

Official source

Ontological neighbourhood

Computer engineering

Computer data storage: File systems

Theoretical computer science

Programming language theory: High-level programming languages

Related concepts (32)

Text file

A text file (sometimes spelled textfile; an old alternative name is flatfile) is a kind of that is structured as a sequence of of electronic text. A text file exists stored as data within a . In operating systems such as CP/M and MS-DOS, where the operating system does not keep track of the file size in bytes, the end of a text file is denoted by placing one or more special characters, known as an (EOF) marker, as padding after the last line in a text file.

Binary file

A binary file is a that is not a . The term "binary file" is often used as a term meaning "non-text file". Many binary s contain parts that can be interpreted as text; for example, some containing formatted text, such as files, contain the text of the document but also contain formatting information in binary form. Binary files are usually thought of as being a sequence of bytes, which means the binary digits (bits) are grouped in eights. Binary files typically contain bytes that are intended to be interpreted as something other than text characters.

C syntax

The syntax of the C programming language is the set of rules governing writing of software in the C language. It is designed to allow for programs that are extremely terse, have a close relationship with the resulting object code, and yet provide relatively high-level data abstraction. C was the first widely successful high-level language for portable operating-system development. C syntax makes use of the maximal munch principle. C data types The C language represents numbers in three forms: integral, real and complex.

Computer file

In computing, a computer file is a resource for recording data on a computer storage device, primarily identified by its . Just as words can be written on paper, so can data be written to a computer file. Files can be shared with and transferred between computers and mobile devices via removable media, networks, or the Internet. Different are designed for different purposes. A file may be designed to store an , a written message, a video, a program, or any wide variety of other kinds of data.

File descriptor

In Unix and Unix-like computer operating systems, a file descriptor (FD, less frequently fildes) is a process-unique identifier (handle) for a or other input/output resource, such as a pipe or network socket. File descriptors typically have non-negative integer values, with negative values being reserved to indicate "no value" or error conditions. File descriptors are a part of the POSIX API.

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