A Brief Introduction to C Programming Language
System programs that deal directly with hardware devices like drivers, kernels, and so on are written in C. C programming is regarded as the "mother language" since it serves as the foundation for all other programming languages.C is such an essential language in computer science that many scholars avail of C programming assignment help from service providers intending to score good marks and grades.
Key Features of C
A lot of people utilize C. The following is a list of some of the numerous features it offers.
1. Simple- Because of its extensive library of functions, data types, and other features, C is a straightforward language to learn and use.
2. Portable or Machine Independent- There are a few machine-specific tweaks that may be made in order to run c programs on a variety of platforms. As a result, C is a language that can be used on any system.
3. Mid-level Programming Language- C, on the other hand, is a low-level programming language. Kernel, drivers, and other similar system components are developed using it. High-level language features are also supported. The term "middle-level language" refers to this.
4. Structured Programming Language- The use of functions in C allows us to decompose a program into smaller, more manageable chunks. As a result, it is simple to grasp and alter. Reusability is another benefit of functions.
5. Rich Library- Using C's built-in functions is a time-saver for programmers.
6. Memory Management- It has the ability to allocate memory dynamically. The free() function in the C language allows us to release the disk space at any moment.
7. Speed- Because there are fewer inbuilt functions & hence less overhead, the C language compiles and executes quickly.
8. Pointer- Pointers are a property of the C programming language. The pointers allow us to interact directly with the memory. Pointers may be used to access memory, structures, functions, arrays, and other data types.
9. Recursion- Within a function, we may call the function. Every function may be reused thanks to its modular design. Backtracking is made possible using recursion.
10. Extensible- Adding new features to C is simple since the language is extensible.
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Types of Variables in C
A. Local Variable – Local variables are variables specified inside a function or block.It has to be stated at the beginning of the block for it to take effect.
B. Global Variable – A global variable is one that is defined outside of a function or block. Any function may alter the global variable's value. There are no restrictions on what you may do with it.It has to be stated at the beginning of the block for it to take effect.
C. Static Variable – The term "static variable" refers to a variable that has been defined using the static keyword. Between calls to the same function, it preserves its value.
D. Automatic Variable - Automatic variables are the default in C for all variables specified within a block. The auto keyword may be used to specify an automatic variable explicitly.
E. External Variable - An external variable may be used to share a variable across different C source files. It is necessary to use the extern keyword to define an external variable.
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