Difference between revisions of "KTurtle/C3/Programming-Concepts/English"
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|- | |- | ||
Next, let's use inbuilt “sqrt” function in a program to find square root of a number. | Next, let's use inbuilt “sqrt” function in a program to find square root of a number. | ||
− | #Program finds square root of a positive number | + | |- |
+ | ||#Program finds square root of a positive number | ||
reset | reset | ||
$i= ask "enter number for i and click OK" | $i= ask "enter number for i and click OK" | ||
Line 226: | Line 227: | ||
print sqrt $i | print sqrt $i | ||
spritehide | spritehide | ||
− | Let me copy the code from editor and paste it into KTurtle's editor. | + | || |
+ | ||Let me copy the code from editor and paste it into KTurtle's editor. | ||
Please pause the tutorial here and copy the program into your KTurtle editor. | Please pause the tutorial here and copy the program into your KTurtle editor. | ||
− | + | || | |
− | Let me zoom the program text it may possibly be a little blurred. | + | |- |
− | + | || | |
− | Let me explain the code. | + | ||Let me zoom the program text it may possibly be a little blurred. |
− | Highlight # | + | |- |
− | # sign comments a line written after it . | + | || |
− | Highlight reset | + | ||Let me explain the code. |
− | reset command sets Turtle to default position. | + | ||Highlight # |
− | Highlight $i | + | ||# sign comments a line written after it . |
− | $i is a variable to store user input. | + | |- |
− | Highlight fontsize 28 | + | ||Highlight reset |
− | fontsize 28 sets the font size used by print. | + | ||reset command sets Turtle to default position. |
− | Highlight print sqrt $i | + | |-Highlight $i |
− | print sqrt $i prints square root of a number. | + | ||$i is a variable to store user input. |
− | Highlight spritehide | + | |- |
− | spritehide hides Turtle from canvas. | + | ||Highlight fontsize 28 |
− | Run the program code | + | ||fontsize 28 sets the font size used by print. |
− | Let me run the program now. | + | |- |
+ | ||Highlight print sqrt $i | ||
+ | ||print sqrt $i prints square root of a number. | ||
+ | |- | ||
+ | ||Highlight spritehide | ||
+ | ||spritehide hides Turtle from canvas. | ||
+ | |-Run the program code | ||
+ | ||Let me run the program now. | ||
Let's enter '169' for i, and click OK | Let's enter '169' for i, and click OK | ||
square root of 169 = 13, | square root of 169 = 13, | ||
is displayed on canvas. | is displayed on canvas. | ||
− | Run the program code | + | |- |
− | Let's run again, | + | ||Run the program code |
+ | ||Let's run again, | ||
let's enter -169 for i and click OK. | let's enter -169 for i and click OK. | ||
If we enter negative number, | If we enter negative number, | ||
− | output is 'nan' it means not a number. | + | output is ''''nan'''' it means not a number. |
As square root of negative number is not real number. | As square root of negative number is not real number. | ||
− | + | |- | |
+ | || | ||
+ | || | ||
Next, let's evaluate Cube root of a positive number through a program. | Next, let's evaluate Cube root of a positive number through a program. | ||
− | #Program to find cube root of a positive number | + | |- |
+ | ||#Program to find cube root of a positive number | ||
reset | reset | ||
$i= ask "enter a number for i and click OK" | $i= ask "enter a number for i and click OK" | ||
Line 266: | Line 279: | ||
print $C | print $C | ||
spritehide | spritehide | ||
− | Let me copy the program from editor and paste it into KTurtle's editor. | + | || |
+ | |- | ||
+ | ||Let me copy the program from editor and paste it into KTurtle's editor. | ||
Line 272: | Line 287: | ||
Please pause the tutorial here and copy the program into your KTurtle editor. | Please pause the tutorial here and copy the program into your KTurtle editor. | ||
+ | |- | ||
+ | || | ||
− | Let me zoom into the program text it may possibly be a liitle blurred. | + | ||Let me zoom into the program text it may possibly be a liitle blurred. |
− | + | |- | |
− | Let me explain the program. | + | ||Let me explain the program. |
− | Highlight # | + | |- |
− | # sign comments a line. | + | ||Highlight # |
+ | ||# sign comments a line. | ||
Please note this is a single line comment. | Please note this is a single line comment. | ||
Every comment must be preceeded by a # sign. | Every comment must be preceeded by a # sign. | ||
− | Highlight reset | + | |- |
− | reset command sets the turtle to default position. | + | ||Highlight reset |
− | Highlight $i | + | ||reset command sets the turtle to default position. |
− | $i and $C are variables to store user input. | + | |- |
− | Highlight $C=($i)^(1/3) | + | ||Highlight $i and $C |
− | $C=($i)^(1/3) calculates cube root of a number. | + | ||$i and $C are variables to store user input. |
− | Highlight fontsize 28 | + | |- |
− | fontsize 28 sets the font size used by print. | + | ||Highlight $C=($i)^(1/3) |
− | Highlight print $C | + | ||$C=($i)^(1/3) calculates cube root of a number. |
− | print $C prints cube root of a number. | + | |- |
− | Highlight spritehide | + | ||Highlight fontsize 28 |
− | spritehide hides Turtle from canvas. | + | ||fontsize 28 sets the font size used by print. |
− | Run the program | + | |- |
− | Let's Run the program | + | ||Highlight print $C |
+ | ||print $C prints cube root of a number. | ||
+ | |- | ||
+ | ||Highlight spritehide | ||
+ | ||spritehide hides Turtle from canvas. | ||
+ | |- | ||
+ | ||Run the program | ||
+ | ||Let's Run the program | ||
Let's enter 343 for i and click OK | Let's enter 343 for i and click OK | ||
cube root of 343 = 7 | cube root of 343 = 7 | ||
is be displayed on canvas. | is be displayed on canvas. | ||
− | + | |- | |
− | With this we have come to the end of this tutorial. | + | || |
+ | ||With this we have come to the end of this tutorial. | ||
let us summarize. | let us summarize. | ||
− | Slide number 8 | + | |- |
+ | ||Slide number 8 | ||
+ | |||
Summary | Summary | ||
− | In this tutorial, we have learnt | + | ||In this tutorial, we have learnt |
− | Programming concepts | + | * Programming concepts |
− | + | ||
− | Use of print command | + | * Use of sqrt function |
− | Using KTurtle editor and canvas. | + | |
− | Slide Number 9 | + | * Use of print command |
+ | |||
+ | * Using KTurtle editor and canvas. | ||
+ | |- | ||
+ | ||Slide Number 9 | ||
Assignment | Assignment | ||
− | As an assignment, I would like you to use basic programming commands to find ... | + | ||As an assignment, I would like you to use basic programming commands to find ... |
− | Cube of a number | + | * Cube of a number |
− | nth root of a number | + | |
− | Slide number 10 | + | * nth root of a number |
+ | |- | ||
+ | ||Slide number 10 | ||
Acknowledgement | Acknowledgement | ||
− | Watch the video available at this URL | + | ||Watch the video available at this URL |
http://spoken-tutorial.org/What is a Spoken Tutorial | http://spoken-tutorial.org/What is a Spoken Tutorial | ||
Line 323: | Line 357: | ||
If you do not have good bandwidth, you can download and watch it | If you do not have good bandwidth, you can download and watch it | ||
− | Slide Number 11 | + | |- |
+ | ||Slide Number 11 | ||
− | The Spoken Tutorial Project Team : | + | ||The Spoken Tutorial Project Team : |
Conducts workshops using spoken tutorials | Conducts workshops using spoken tutorials | ||
Line 334: | Line 369: | ||
contact@spoken-tutorial.org | contact@spoken-tutorial.org | ||
− | Slide number 12 | + | |- |
− | Spoken Tutorial Project is a part of the Talk to a Teacher project. | + | ||Slide number 12 |
+ | ||Spoken Tutorial Project is a part of the Talk to a Teacher project. | ||
It is supported by the National Mission on Education through ICT, MHRD, Government of India. | It is supported by the National Mission on Education through ICT, MHRD, Government of India. | ||
Line 343: | Line 379: | ||
This is Madhuri Ganpathi, from IIT Bombay signing off. | This is Madhuri Ganpathi, from IIT Bombay signing off. | ||
Thank you for joining. | Thank you for joining. | ||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
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Revision as of 18:21, 24 December 2012
Visual Cue | Narration | ||
---|---|---|---|
Slide Number 1 | Hello Everybody.
Welcome to this tutorial on Programming concepts in KTurtle. | ||
Slide Number 2
Learning Objectives |
In this tutorial, we will learn how to
| ||
Slide Number 3
System Requirement
|
To record this tutorial, I am using,
Ubuntu Linux OS Version 11.10. KTurtle version 0.8.1 beta. | ||
Slide number 4
Pre-requisites |
We assume that you have basic working knowledge of KTurtle. If not, for relevant tutorials, please visit our website, | ||
Before proceeding, we will discuss some basic information about KTurtle. | |||
Slide Number 5
Sprite |
"Turtle" displayed on the canvas is called "sprite".
"Sprite" is a small image that moves around the screen. e.g. Cursor is a sprite. | ||
Slide Number 6
sprite Commands |
"spritehide" command hides Turtle from canvas.
"spriteshow" command shows Turtle if it is hidden. "clear" command cleans all drawings from canvas. | ||
Slide Number 7
Symbols |
In KTurtle,
"$ " sign is a container of variables. "*"(asterisk) is used for multiplication of two numbers. "^"(caret) raises the power of a number. "#"(hash) sign comments a line written after it. "sqrt" is an inbuilt function to find square root of a number. | ||
Switch to Kturtle Application
Dash home >>Media Apps>>Under Type >>Education>>KTurtle |
Let's open new KTurtle Application
Click on Dash home >> Media Apps. Under Type, Choose Education and KTurtle. KTurtle application opens. | ||
Press CTRL+ALT+T >> open the terminal >>type kturtle >>press enter to open | We can also open KTurtle Application from the terminal.
Press CTRL+ALT+T simultaneously to open the terminal. Type KTurtle and press enter, KTurtle Application opens. | ||
Let me type and explain the program code. | |||
Let me zoom the program text, it may possibly be a little blurred. | |||
#program to find square of a number
Highlight # |
#program to find square of a number. Press enter
"#" sign comments a line written after it. This means, this line will not be executed while running the program. Press enter. | ||
reset
Highlight reset |
reset
reset command sets Turtle to default position. Press enter. | ||
$i= ask "enter any number for i and click OK"
Highlight $i |
$i= ask within double quotes enter any number for i and click OK. "$i" is a variable to store user input. | ||
Highlight "ask" | “ask” command asks for user input to be stored in variable
press enter | ||
fontsize 28
Highlight fontsize 28 |
“fontsize” space 28 press enter.
fontsize 28 sets the font size used by print. Fontsize takes number as input, set in pixels. | ||
print $i*$i
Highlight print $i*$i |
print $i*$i
print $i*$i calculates and prints square of a number. press enter. | ||
spritehide
Highlight spritehide |
spritehide
spritehide hides Turtle from canvas. | ||
Run the program code | Let us Run the program now.
Click on Run button on the toolbar to start execution of the code in the editor. It shows a list of execution speeds. Full speed(no highlighting and inspector) Full speed, slow, slower, slowest and step-by-step. | ||
Enter '15' for i
Square of 15 =225 |
Let me run the code at slow speed.
An "input bar" appears let's enter 15 for i and click OK square of '15' = '225' is displayed on the canvas. | ||
Let's now learn to find nth power of a number through a program. | I already have program in a text editor. | ||
#Program evaluates nth power of a number
reset $i= ask "enter number for i and click OK" $n=ask "enter number for n and click OK" fontsize 28 print ($i^$n) spritehide |
Let me copy the code from editor and paste it into KTurtle editor.
| ||
Let me zoom the program text. |
|||
Explain the program. | |||
Highlight # | # sign comments a line written after it. | ||
Highlight reset | reset command sets Turtle to default position. | ||
Highlight $i and $n | $i and $n are variables to store user input. | ||
Highlight ask | “ask” command asks for user input to be stored in variables. | ||
Highlight fontsize 28 | fontsize 28 sets the font size used by print.
Fontsize takes number as input, set in pixels. | ||
Highlight print ($i^$n) | print ($i^$n) calculates & prints nth power of a number. | ||
Highlight spritehide | spritehide hides Turtle from canvas. | ||
Run the program code | Let's run the program.
Let's enter '5' for i, and click OK Let's enter '4' for n, and click OK 5^4=625 is displayed on canvas. | ||
#Program finds square root of a positive number
reset $i= ask "enter number for i and click OK" fontsize 28 print sqrt $i spritehide |
Let me copy the code from editor and paste it into KTurtle's editor.
|
||
Let me zoom the program text it may possibly be a little blurred. | |||
Let me explain the code. | Highlight # | # sign comments a line written after it . | |
Highlight reset | reset command sets Turtle to default position. | ||
$i is a variable to store user input. | |||
Highlight fontsize 28 | fontsize 28 sets the font size used by print. | ||
Highlight print sqrt $i | print sqrt $i prints square root of a number. | ||
Highlight spritehide | spritehide hides Turtle from canvas. | ||
Let me run the program now.
Let's enter '169' for i, and click OK square root of 169 = 13, is displayed on canvas. | |||
Run the program code | Let's run again,
let's enter -169 for i and click OK. If we enter negative number, output is 'nan' it means not a number. As square root of negative number is not real number. | ||
Next, let's evaluate Cube root of a positive number through a program. | |||
#Program to find cube root of a positive number
reset $i= ask "enter a number for i and click OK" $C=($i)^(1/3) fontsize 28 print $C spritehide |
|||
Let me copy the program from editor and paste it into KTurtle's editor.
| |||
Let me zoom into the program text it may possibly be a liitle blurred. | |||
Let me explain the program. | |||
Highlight # | # sign comments a line.
Please note this is a single line comment. Every comment must be preceeded by a # sign. | ||
Highlight reset | reset command sets the turtle to default position. | ||
Highlight $i and $C | $i and $C are variables to store user input. | ||
Highlight $C=($i)^(1/3) | $C=($i)^(1/3) calculates cube root of a number. | ||
Highlight fontsize 28 | fontsize 28 sets the font size used by print. | ||
Highlight print $C | print $C prints cube root of a number. | ||
Highlight spritehide | spritehide hides Turtle from canvas. | ||
Run the program | Let's Run the program
Let's enter 343 for i and click OK cube root of 343 = 7 is be displayed on canvas. | ||
With this we have come to the end of this tutorial.
let us summarize. | |||
Slide number 8
Summary |
In this tutorial, we have learnt
| ||
Slide Number 9
Assignment |
As an assignment, I would like you to use basic programming commands to find ...
| ||
Slide number 10
Acknowledgement |
Watch the video available at this URL
http://spoken-tutorial.org/What is a Spoken Tutorial It summarises the Spoken Tutorial project If you do not have good bandwidth, you can download and watch it | ||
Slide Number 11 | The Spoken Tutorial Project Team :
Conducts workshops using spoken tutorials Gives certificates to those who pass an online test For more details, please write to contact@spoken-tutorial.org | ||
Slide number 12 | Spoken Tutorial Project is a part of the Talk to a Teacher project.
It is supported by the National Mission on Education through ICT, MHRD, Government of India. More information on this Mission is available at this ttp://spoken-tutorial.org/NMEICT-Intro ]. This is Madhuri Ganpathi, from IIT Bombay signing off. Thank you for joining. |