The document outlines the basic structure of the C programming language, emphasizing its importance in programming and problem-solving. It explains key concepts such as header files, the main function, comments, variables, and constants, along with example code snippets. Additionally, it highlights opportunities in coding, such as creating websites or starting a business in software or app development.

1. Basic Structure of C Language
and Related Term
By:Prof.Muhammad Waseem

2. Importance of Programming & Problem
Solving
• Here are some of the things that learning coding can empower someone to do-
• ToMake someone’s Own Website.
• Become a Career Coder.
• Start a Business
• Some of the kinds of businesses you can start include…
selling software
selling mobile apps
e-commerce
selling your coding time.
ToUnderstand How Computers Work and so more.

3. HEADER FILE
• A header file is a file with extension .h which contains C function declarations .
• There are two types of header files :
Files that the programmer writes and
Files that comes with a compiler.
• For Example:
stdio.h header file contains standard Input and Output functions.
string.h header file contains string handling functions.

4. Main function
• main() function is the entry point of any C program;
• It is the point at which execution of program is started;
• When a C program is executed, the execution control goes directly to the
main() function.
• Every C program have a main() function.
• It’s a compulsory for c program.

5. Simple example of a
program

6. Program Structure
• A sample of c program-
#include<stdio.h>
int main()
{
-----Statements----
// comments after double slash
}

8. Comments in c
• A comment is a programmer-readable explanation;
• They are added with the purpose of making the source code easier for humans to understand,
and are generally ignored by compilers and interpreters.
• Example-
• Single line comment-
//(double slash);
Multiline comment-
/*---------
------*/
• This can span over to multiple line;

9. Keywords in C Language

10. variables
• Variables are data that will keep on changing. A variable is nothing but a name given to a
storage area that our programs can manipulate.
• Declaration
<<Data type>> <<variable name>>;
int a;
• Definition
<<varname>>=<<value>>;
a=10;
• Usage
a=a+1; //increments the value of a by 1

11. Variable names-Rules

12. Constants
• Constants refer to fixed values that the program may not alter during its
execution. These fixed values are also called literals.
• Given below is the form to use #define preprocessor to define a
• const
• #define identifier value

13. Thanks!