C Programming Tutorial

Welcome to the C Programming Tutorial! This guide will help you learn the basics of C programming and build a strong foundation.

Introduction to C

C is a powerful general-purpose programming language. It is widely used for system programming, developing operating systems, and embedded systems.

Setting Up the Environment

To start programming in C, you need:

• A text editor (e.g., VS Code, Sublime Text)
• A C compiler (e.g., GCC, Clang)

Basic Syntax

Here is a simple "Hello, World!" program in C:

#include <stdio.h>

int main() {
    printf("Hello, World!\n");
    return 0;
}

Data Types and Variables

C supports various data types such as int, float, char, and more. Example:

int age = 25;
float pi = 3.14;
char grade = 'A';

Control Structures

Control structures like if, for, and while are used to control the flow of the program. Example:

if (age > 18) {
    printf("You are an adult.\n");
}

Functions

Functions allow you to organize code into reusable blocks. Example:

int add(int a, int b) {
    return a + b;
}

Pointers

Pointers are variables that store memory addresses. Example:

int x = 10;
int *ptr = &x;
printf("Value of x: %d\n", *ptr);

Memory Management

C provides functions like malloc and free for dynamic memory allocation. Example:

int *arr = (int *)malloc(5 * sizeof(int));
free(arr);

File Handling

C allows you to work with files using functions like fopen, fwrite, and fread. Example:

FILE *file = fopen("example.txt", "w");
fprintf(file, "Hello, File!");
fclose(file);

Conclusion

C is a versatile language that provides low-level access to memory and is widely used in various domains. Keep practicing to master it!