C Language Basics and Installation Guide

1. Introduction to C

C is a procedural programming language developed in 1972 by Dennis Ritchie.

• Features: Powerful hardware control capabilities, the standard for operating system (Unix/Windows) development, and support for pointers.
• Advantages: Exceptionally fast execution speed and superior memory efficiency.
• Application Areas: Embedded systems, operating systems (OS), hardware drivers, and real-time systems.

2. Setting Up Windows/Linux/Mac Environments

• Windows: Install MinGW or Visual Studio (with "Desktop development with C++").
• macOS: Install Clang by running xcode-select --install in the terminal.
• Linux: Install GCC using a package manager (e.g., sudo apt install build-essential).

3. A Simple Program (Hello, World)

#include <stdio.h>

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

• #include <stdio.h>: Includes the Standard Input/Output library.
• int main(): The entry point of the program.
• printf(): A function that outputs text to the console screen.