C Tutorial

1. Introduction C is a textual formal imperative. It was designed to be compiled using a fairly simple compiler to provide low-level access to space and language concepts that map machine operations efficiently, all with limited support for runtime. The language can be used on different platforms, from integrated microcontrollers to supercomputers C programming begins with: Structure of a C program specification, every program is intended to be writable in this specification alone. In this C tutorial ​Writing a C, the program can result in a compilation error in some other structure. The components of the above structure are: Structure of C Program Header #include<stdio.h>

2. main() Int main() { Variable Declaration Int a=5; Body printf(“%d”,a); Return Return 0; } 1. Inclusion of Header Files​: The first and main aspect is to include the Header files in a C system. A header file is a .h extension file that contains declarations of C function and macro definitions to be shared between multiple source files. Many of the files at C Header: ●​​stddef.h – Describes some useful macros and forms. ●​​Stdint.h – Defines the exact types of integer widths. ●​​Stdio.h – Describes the main function's input and output ● pseudo-random, memory allocation ●​​string.h – Specifies functions for the handling of strings ●​​Math.h - Describes common math functions Syntax to include a file in C with a header: #include ​Stdlib.h – Specifies numerical conversion functions, network generator 2. Main Method Declaration​: Defining the principal main()function is the next element of a C program. The syntax for declaring the key function is: Syntax for declaring the principal method:

3. Syntax to the main method declare: int main() {} 3. Variable Declaration​: The variable declaration is the next component of every C program. It refers to the variables to be employed in the task. Remember that no variable can be used in the C system without needing to be declared. The variables must also be specified in a C program before any operation within the function. Example: int main() { int a; . .​. . 4. Body​: In the C program, the body of a function relates to the operations performed in the functions. It can be something like manipulations, scan, type, print, etc. Example: int main() { int a; printf("%d", a); . .​. . 5. Return Statement​:

4. For every C program, the last element is the return statement. The return declaration refers to returning the values from a task. The return statement and return value depend on the function's return type. For example, if the form of return is void, then no return statement will be provided. In any other case, a return statement will be given, and the return value will be the form of the stated return form. Example: int main() { int a; printf("%d", a); return 0;