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Welcome to the blog series for C language. C was developed by Dennis Ritchie in 1972 at Bell Laboratories. C is a middle-level, structured programming language that needs a compiler for running the programs written in the C language. We will cover all the concepts of the C programming language in this series. Let’s start learning C.
C is a general-purpose programming language that is extremely popular, simple, and flexible to use. It is a machine-independent language and is extensively used to write various applications, Operating Systems like Windows, and many other complex programs like Oracle database, Git, Python interpreter, and more. We’ll be going to learn all the basic concepts. In the beginning, it may appear a little confusing and complicated but trust me once you understand the concept, you will be able to do so much more with C language.
The C language supports a rich set of built-in operators. An operator is a symbol that tells the compiler to perform certain mathematical or logical operations, based on the values provided to the operator. Operators are used in programs to manipulate data and variables.
Function is basically a set of statements that takes inputs, performs some computation, and produces output. There are many situations where we might need to write the same line of code more than once in a program. So, C language provides an approach in which you can declare and define a group of statements once in the form of a function and it can be called and used whenever required.
An array is a data structure containing a number of data values or finite ordered collection of homogenous data, stored in contiguous memory locations.
Pointer is a special variable that is capable of storing some addresses. It points to a memory location where the first byte is stored. Pointers are used in multiple scenarios like file handling or to allocate memory dynamically. Let us start playing with pointers!
String is a sequence of characters that are treated as a single data item and terminated by a null character ‘\0’. C does not support strings as a data type. A string is actually a one-dimensional array of characters in the C language.
Structures and Unions
Structure is a user-defined data type that allows us to combine data of different types together. Unions are conceptually similar to structures. The only difference is in terms of storage. Union uses a single shared memory location which is equal to the size of its largest data member whereas in structures each member has its own storage location.
Memory Management in C
Almost all computer languages can handle system memory. Memory management is the process of controlling and coordinating computer memory, assigning portions called blocks to various running programs to optimize overall system performance. When a variable gets assigned in memory in one program, that memory location cannot be used by another variable or another program. So, the C language gives us a technique of allocating memory to different variables and programs.
File Handling
File handling refers to the method of storing data in the C program in the form of an output or input that might have been generated while running a C program in a data file, i.e., a binary file or a text file for future analysis and reference in that very program. File handling in C enables us to create, update, read, and delete the files stored on the local file system through our C program.
The C preprocessor is a macro preprocessor that allows you to define macros that transform your program before it is compiled. These transformations can be the inclusion of header files, macro expansions, etc.
Problems in C
C is a general-purpose, imperative computer programming language. The best way we learn anything is by practicing and exercising questions. So what you are waiting for Let’s get started. Hope, these problems help you to improve your C programming coding skills.
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