C Programming Lecture Notes

Introduction to C Programming

• Instructor: Father Manodar, Software Developer at Programmies
• Objective: Learn everything about C programming to understand programming concepts well.

What is C Programming?

• General-purpose programming language.
• Developed in the 1970s to rewrite the Unix operating system.
• Applications: Web browsers, database management systems (e.g., MySQL).
• Despite newer languages (Python, JavaScript), C remains relevant due to speed, efficiency, and hardware access.

Reasons to Learn C

• Helps understand software and hardware interactions.
• Directly works with computer memory.
• Many universities teach C as a first programming language.
• Quote by Joel Spolsky: "If you can't understand why this code copies a string, you are programming based on superstition."

Setting Up the Environment

• Install a C compiler and text editor.
• Online C editor available: www.programmies.com/c-programming/online-compiler.

Writing Your First C Program

Hello World Example

1. Create the main function: int main() {}
2. Use return 0; to mark the end.
3. Structure:

   #include <stdio.h>  
   int main() {  
       printf("Hello, World!\n");  
       return 0;  
   }  
   

4. To print: `printf(