An Introduction to Programming By :- Vishal Hirani B.Tech II year (CSE)
Mar 28, 2015
An Introduction to Programming
By :- Vishal HiraniB.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.
How to run the program?Using a Compiler
Third : Save the file with extension .c example helloworld.c
CompilerA 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 FlowchartAlgorithm:
-Step by Step method to solve a problem.
-Must include “ALL” required information.Flowchart:
-Graphical representation of Algorithm. -Includes Terminal + Process + Decision
Average??
Question: Find the largest of A,B & C
Start
Read A, B & C
Is A>B
Is A>C
Is B>C
Print APrint B Print C
End
YesYes
No
No
No Yes
Starting with LinuxTerminal (Ctrl+Alt+T)
Gedit: “gedit”
Program
Compiler
Output
Hello World!
/* Hello World program */ #include<stdio.h> int main() {
printf("Hello World");
return 0;}
CommentHeader File Main function-Function starts
Print functionReturning
output-Function ends
Remember the .c extension
Compiler: How to compilegcc filename
Output: How to Run?./filename.out
Assignment