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An Introduction to Programming. By :- Vishal Hirani B.Tech II year (CSE). What is Programming?. Wiki Definition : The action or process of writing computer programs. What is a Computer Program?. A sequence of instructions that a computer can interpret and execute. How Programming Works?.
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An Introduction to Programming By :- Vishal Hirani B.Tech II year (CSE)
What is Programming? • Wiki Definition: The action or process of writing computer programs. What is a Computer Program? • A sequence of instructions that a computer can interpret and execute How Programming Works? • A Program tells a computer what to do. What is a Programming Language? • A programming language acts as a translator between you and the computer.
How to Write a Program? • First : you need a computer • Second : you need a text editor. -Talking about Linux, you will be using Gedit. • Third : Save the file with extension .c example helloworld.c How to run the program? • Using a Compiler
Compiler • A compiler is a special program that processes statements written in a particular programming language and turns them into machine language or "code" that a computer's processor uses. • For Linux this Compiler is GCC • And it is the compiler for most Unix based operating system and many languages`
Algorithm and Flowchart • Algorithm: -Step by Step method to solve a problem. -Must include “ALL” required information. • Flowchart: -Graphical representation of Algorithm. -Includes Terminal + Process + Decision
Question: Find the largest of A,B & C Start Read A, B & C Is B>C Is A>B Is A>C Yes No Yes Yes No Print B Print C Print A No End
Starting with Linux • Terminal (Ctrl+Alt+T) • Gedit: “gedit” • Program • Compiler • Output
Hello World! /* Hello World program */ #include<stdio.h> int main() { printf("Hello World"); return 0; } Comment Header File Main function -Function starts Print function Returning output -Function ends Remember the .c extension
Compiler: How to compile gcc filename
Output: How to Run? ./filename.out