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C language is a programming language that is widely used for developing system software, application software, and embedded systems. Here are some key concepts of C language:
• Variables: Variables are used to store data in a program. In C, variables must be declared with a specific data type (such as int, float, or char) before they can be used.
• Data Types: C supports several data types, including integers, floating-point numbers, characters, and arrays.
• Operators: C includes a variety of operators, such as arithmetic operators (+, -, *, /), relational operators (>, <, ==), and logical operators (&&, ||, !).
• Control structures: C provides a variety of control structures, including if/else statements, switch statements, for loops, while loops, and do-while loops.
• Functions: C allows you to create your own functions, which are blocks of code that can be called from other parts of the program.
• Pointers: Pointers are used to store memory addresses. In C, you can use pointers to manipulate data and improve the efficiency of your code.
• Arrays: Arrays are used to store multiple values of the same data type in a single variable.
• Structures: Structures allow you to define your own data types, which can include multiple fields of different data types.
• File I/O: C includes functions for reading from and writing to files, allowing you to work with data stored on disk.
• Preprocessor Directives: C includes a preprocessor that allows you to include libraries, define constants, and perform other operations before the code is compiled.