Difference between revisions of "KTurtle/C3/Programming-Concepts/English-timed"

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||Hello Everybody.

||Hello Everybody.

    

    

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||Welcome to this tutorial on '''Programming concepts''' in '''KTurtle'''.  

||Welcome to this tutorial on '''Programming concepts''' in '''KTurtle'''.  

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||In this tutorial, we will learn how to  

||In this tutorial, we will learn how to  

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||Write a program in KTurtle  

||Write a program in KTurtle  

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||Use variables to store user input  

||Use variables to store user input  

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||Use print command to print on canvas  

||Use print command to print on canvas  

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||Comment a line  

||Comment a line  

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||To record this tutorial, I am using,Ubuntu Linux OS Version 11.10. KTurtle version 0.8.1 beta.  

||To record this tutorial, I am using,Ubuntu Linux OS Version 11.10. KTurtle version 0.8.1 beta.  

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||We assume that you have basic working knowledge of '''KTurtle'''.  

||We assume that you have basic working knowledge of '''KTurtle'''.  

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||If not, for relevant tutorials, please visit our website, '''http://spoken-tutorial.org'''.  

||If not, for relevant tutorials, please visit our website, '''http://spoken-tutorial.org'''.  

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||Before proceeding, we will discuss some basic information about '''KTurtle'''.  

||Before proceeding, we will discuss some basic information about '''KTurtle'''.  

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||"Turtle" displayed on the canvas is called "sprite".  

||"Turtle" displayed on the canvas is called "sprite".  

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||"Sprite" is a small image that moves around the screen.e.g. Cursor is a sprite.  

||"Sprite" is a small image that moves around the screen.e.g. Cursor is a sprite.  

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||"spritehide" command hides '''Turtle''' from canvas.  

||"spritehide" command hides '''Turtle''' from canvas.  

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||"spriteshow" command shows '''Turtle''' if it is hidden.  

||"spriteshow" command shows '''Turtle''' if it is hidden.  

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||"clear" command cleans all drawings from canvas.  

||"clear" command cleans all drawings from canvas.  

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||In '''KTurtle''',  

||In '''KTurtle''',  

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||"$ " sign is a container of variables.  

||"$ " sign is a container of variables.  

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||"*"(asterisk) is used for multiplication of two numbers.  

||"*"(asterisk) is used for multiplication of two numbers.  

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||"^"(caret) raises a power of the number.  

||"^"(caret) raises a power of the number.  

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||"#"(hash) sign comments a line written after it.  

||"#"(hash) sign comments a line written after it.  

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||"sqrt" is an inbuilt function to find square root of a number.  

||"sqrt" is an inbuilt function to find square root of a number.  

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||Let's open new '''KTurtle''' Application  

||Let's open new '''KTurtle''' Application  

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||Click on '''Dash home >> Media Apps'''.  

||Click on '''Dash home >> Media Apps'''.  

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||'''Under Type, Choose Education''' and '''KTurtle'''.  

||'''Under Type, Choose Education''' and '''KTurtle'''.  

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||'''KTurtle''' application opens.  

||'''KTurtle''' application opens.  

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||We can also open '''KTurtle''' using '''terminal'''.  

||We can also open '''KTurtle''' using '''terminal'''.  

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||Press '''CTRL+ALT+T''' simultaneously to open the terminal.  

||Press '''CTRL+ALT+T''' simultaneously to open the terminal.  

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||Type '''KTurtle''' and press enter, '''KTurtle''' Application opens.  

||Type '''KTurtle''' and press enter, '''KTurtle''' Application opens.  

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||Let me type and explain the program code.  

||Let me type and explain the program code.  

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||Let me zoom into the program text, it may possibly be a little blurred.  

||Let me zoom into the program text, it may possibly be a little blurred.  

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||'''#program to find square of a number'''. Press enter  

||'''#program to find square of a number'''. Press enter  

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||"#" sign comments a line written after it.  

||"#" sign comments a line written after it.  

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||This means, this line will not be executed while running the program. Press enter.  

||This means, this line will not be executed while running the program. Press enter.  

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||'''reset'''

||'''reset'''

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||reset command sets Turtle to default position. Press enter.  

||reset command sets Turtle to default position. Press enter.  

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||'''$i= ask''' within double quotes '''enter a number for i and click OK'''.  

||'''$i= ask''' within double quotes '''enter a number for i and click OK'''.  

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||"$i" is a variable to store user input.  

||"$i" is a variable to store user input.  

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||'''“ask”''' command asks for user input to be stored in variable.press enter  

||'''“ask”''' command asks for user input to be stored in variable.press enter  

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||'''“fontsize”''' space '''28'''.

||'''“fontsize”''' space '''28'''.

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||'''fontsize''' sets the font size used by print.  

||'''fontsize''' sets the font size used by print.  

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||Fontsize takes number as input, set in pixels.  

||Fontsize takes number as input, set in pixels.  

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||'''print $i*$i'''   

||'''print $i*$i'''   

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||'''print $i*$i''' calculates and prints square of a number. press enter.  

||'''print $i*$i''' calculates and prints square of a number. press enter.  

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||'''spritehide'''

||'''spritehide'''

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||'''spritehide''' hides '''Turtle''' from canvas.

||'''spritehide''' hides '''Turtle''' from canvas.

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||Let us Run the program now.

||Let us Run the program now.

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||Click on the '''Run''' button on the toolbar to start execution of the code in the editor.

||Click on the '''Run''' button on the toolbar to start execution of the code in the editor.

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||It shows a list of execution speeds.  

||It shows a list of execution speeds.  

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||'''Full speed(no highlighting and inspector)'''

||'''Full speed(no highlighting and inspector)'''

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||'''Full speed''',  

||'''Full speed''',  

'''slow''',  

'''slow''',  

'''step-by-step'''.

'''step-by-step'''.

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||Let me run the code at '''slow''' speed.

||Let me run the code at '''slow''' speed.

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||An "input bar" appears  

||An "input bar" appears  

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||let's enter  15  for i  and click OK

||let's enter  15  for i  and click OK

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||square of '15'  = '225' is displayed on the canvas.

||square of '15'  = '225' is displayed on the canvas.

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||Let's now learn to find nth power of a number through a  program.

||Let's now learn to find nth power of a number through a  program.

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||I already have program  in a text editor.  

||I already have program  in a text editor.  

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||Let me copy the program from text editor and paste it into  '''KTurtle''' editor.  

||Let me copy the program from text editor and paste it into  '''KTurtle''' editor.  

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||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.  

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||Let me zoom into the program text.

||Let me zoom into the program text.

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||Explain the program.

||Explain the program.

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||# sign comments a line written after it.

||# sign comments a line written after it.

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||'''reset''' command sets '''Turtle''' to '''default''' position.

||'''reset''' command sets '''Turtle''' to '''default''' position.

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||'''$i''' and '''$n''' are variables to store user input.

||'''$i''' and '''$n''' are variables to store user input.

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||'''“ask”''' command asks for user input to be stored in variables.

||'''“ask”''' command asks for user input to be stored in variables.

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||'''fontsize 28'''  sets the font size used by print.  

||'''fontsize 28'''  sets the font size used by print.  

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||Fontsize takes number as input, set in pixels.

||Fontsize takes number as input, set in pixels.

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||'''print ($i^$n)''' calculates & prints nth power of a number.  

||'''print ($i^$n)''' calculates & prints nth power of a number.  

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||'''spritehide''' hides '''Turtle''' from canvas.

||'''spritehide''' hides '''Turtle''' from canvas.

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||Let's  run the program.

||Let's  run the program.

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||Let's enter '5'  for i, and click OK

||Let's enter '5'  for i, and click OK

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||Let's enter  '4' for n, and click OK. 5^4=625  is displayed on canvas.  

||Let's enter  '4' for n, and click OK. 5^4=625  is displayed on canvas.  

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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.

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||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.  

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||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.  

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||Let me zoom the program text it may possibly be a little blurred.

||Let me zoom the program text it may possibly be a little blurred.

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||Let me explain the code.

||Let me explain the code.

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||# sign comments a line written after it .  

||# sign comments a line written after it .  

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||'''reset''' command sets '''Turtle''' to '''default''' position.

||'''reset''' command sets '''Turtle''' to '''default''' position.

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||'''$i''' is a variable to store user input.

||'''$i''' is a variable to store user input.

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||'''fontsize 28'''  sets the font size used by print.

||'''fontsize 28'''  sets the font size used by print.

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||'''print sqrt $i''' prints square root of a number.  

||'''print sqrt $i''' prints square root of a number.  

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||'''spritehide''' hides '''Turtle''' from canvas.

||'''spritehide''' hides '''Turtle''' from canvas.

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||Let me run the program now.

||Let me run the program now.

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||Let's enter  '169'  for i,  and click OK

||Let's enter  '169'  for i,  and click OK

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||square root of 169 = 13, is displayed on canvas.

||square root of 169 = 13, is displayed on canvas.

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||Let's  run again,

||Let's  run again,

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||let's enter -169  for i and click OK.

||let's enter -169  for i and click OK.

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||If we enter negative number, output is ''''nan''''  it means not a number.

||If we enter negative number, output is ''''nan''''  it means not a number.

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||As square root of negative number is not  a real  number.

||As square root of negative number is not  a real  number.

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|| let's next evaluate Cube root of a positive number through a program.

|| let's next evaluate Cube root of a positive number through a program.

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||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.

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||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.  

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||Let me zoom into the program text it may possibly be a little blurred.

||Let me zoom into the program text it may possibly be a little blurred.

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||Let me explain the program.

||Let me explain the program.

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||#  sign comments a line written after it.

||#  sign comments a line written after it.

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||Please note this is a single line comment.  

||Please note this is a single line comment.  

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||Every comment must be preceded by a # sign.

||Every comment must be preceded by a # sign.

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||'''reset''' command sets the '''Turtle''' to '''default''' position.

||'''reset''' command sets the '''Turtle''' to '''default''' position.

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||'''$i''' and '''$C''' are  variables to store user input.

||'''$i''' and '''$C''' are  variables to store user input.

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||'''$C=($i)^(1/3)''' calculates cube root of a number.

||'''$C=($i)^(1/3)''' calculates cube root of a number.

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||'''fontsize 28'''  sets the font size used by print.  

||'''fontsize 28'''  sets the font size used by print.  

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||'''print $C''' prints cube root of a number.  

||'''print $C''' prints cube root of a number.  

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||'''spritehide''' hides '''Turtle''' from canvas.

||'''spritehide''' hides '''Turtle''' from canvas.

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||Let's Run the program

||Let's Run the program

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||Let's enter 343 for i and click OK

||Let's enter 343 for i and click OK

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||cube root of 343 = 7 is be displayed on canvas.

||cube root of 343 = 7 is be displayed on canvas.

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||With this we  come to the end of this tutorial.

||With this we  come to the end of this tutorial.

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||let us summarize.

||let us summarize.

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||In this tutorial, we have learnt

||In this tutorial, we have learnt

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||Programming concepts  

||Programming concepts  

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|| Use of sqrt function

|| Use of sqrt function

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|| Use of print command  

|| Use of print command  

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||Using KTurtle editor and canvas.

||Using KTurtle editor and canvas.

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||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 ...

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||Cube of a number  

||Cube of a number  

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|| nth root of a number

|| nth root of a number

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||Watch the video available at  this URLhttp://spoken-tutorial.org/What is a Spoken Tutorial  

||Watch the video available at  this URLhttp://spoken-tutorial.org/What is a Spoken Tutorial  

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||It summarises the Spoken Tutorial project  

||It summarises the Spoken Tutorial project  

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||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  

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||The Spoken Tutorial Project Team :

||The Spoken Tutorial Project Team :

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||Conducts workshops using spoken tutorials  

||Conducts workshops using spoken tutorials  

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||Gives certificates to those who pass an online test  

||Gives certificates to those who pass an online test  

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||For more details, please write to contact@spoken-tutorial.org

||For more details, please write to contact@spoken-tutorial.org

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||Spoken Tutorial Project is a part  of the Talk to a Teacher project.

||Spoken Tutorial Project is a part  of the Talk to a Teacher project.

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||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.

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||More information on this Mission is available at this http://spoken-tutorial.org/NMEICT-Intro ].

||More information on this Mission is available at this http://spoken-tutorial.org/NMEICT-Intro ].

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||This is Madhuri Ganpathi, from IIT Bombay signing off.Thank you for joining.

||This is Madhuri Ganpathi, from IIT Bombay signing off.Thank you for joining.

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