Difference between revisions of "Scilab/C2/Conditional-Branching/English-timed"
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| − | + | |'''Time''' | |
| − | + | |'''Narration''' | |
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| | Welcome to the spoken tutorial on Conditional Branching in Scilab. | | | Welcome to the spoken tutorial on Conditional Branching in Scilab. | ||
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| To practice this tutorial open the scilab console window on your computer | | To practice this tutorial open the scilab console window on your computer | ||
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| | We will discuss two types of Conditional constructs in Scilab that is the "if-then-else" construct and the "select-case conditional" construct. | | | We will discuss two types of Conditional constructs in Scilab that is the "if-then-else" construct and the "select-case conditional" construct. | ||
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| | The if statement allows us to execute a group of statements if a given condition is satisfied. | | | The if statement allows us to execute a group of statements if a given condition is satisfied. | ||
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| | Let me give you an example: | | | Let me give you an example: | ||
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| |n is equal 42 if n is equal to equal to 42 then disp the number is 42, end of if construct. | | |n is equal 42 if n is equal to equal to 42 then disp the number is 42, end of if construct. | ||
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| | Here 'is equal to' is the assignment operator, which assigns 42 to the variable n, | | | Here 'is equal to' is the assignment operator, which assigns 42 to the variable n, | ||
| + | |||
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| | And 'is equal to is equal to' is the equality operator, which checks for the equality between the right hand and the left hand side operands. | | | And 'is equal to is equal to' is the equality operator, which checks for the equality between the right hand and the left hand side operands. | ||
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| In this case n and 42 and gives the result in Boolean. | | In this case n and 42 and gives the result in Boolean. | ||
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| | Here the comma after the first line is optional, | | | Here the comma after the first line is optional, | ||
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| | Also the ''then'' keyword is optional. | | | Also the ''then'' keyword is optional. | ||
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|| It can be replaced by a comma or a carriage return. | || It can be replaced by a comma or a carriage return. | ||
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|| The end keyword ends the "if" construct. | || The end keyword ends the "if" construct. | ||
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|| On executing the script, we see the output as follows. | || On executing the script, we see the output as follows. | ||
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| | So far we have seen how to execute a set of statements if a condition is true. | | | So far we have seen how to execute a set of statements if a condition is true. | ||
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| − | | 01 | + | | 01:26 |
|| Now we will see how to execute another set of statements if that condition is false or we may wish to check if some other condition is satisfied. | || Now we will see how to execute another set of statements if that condition is false or we may wish to check if some other condition is satisfied. | ||
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| | We can do this by using 'else' or 'elseif' keyword respectively. | | | We can do this by using 'else' or 'elseif' keyword respectively. | ||
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| | Here is how we do it | | | Here is how we do it | ||
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|| In this example, 54 is assigned to a variable n and checked for both true condition using 'if' and false condition using 'else' as described: | || In this example, 54 is assigned to a variable n and checked for both true condition using 'if' and false condition using 'else' as described: | ||
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| | I will cut this, paste in the scilab console hit enter | | | I will cut this, paste in the scilab console hit enter | ||
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| | You see the output. | | | You see the output. | ||
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| | If you notice, the examples shown above are on multiple lines. | | | If you notice, the examples shown above are on multiple lines. | ||
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|| They can also be written in a single line with proper semicolons and commas. | || They can also be written in a single line with proper semicolons and commas. | ||
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| | I will cut this and paste in the scilab to execute. Hit enter | | | I will cut this and paste in the scilab to execute. Hit enter | ||
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|| The select statement allows to combine several branches in a clear and simple way. | || The select statement allows to combine several branches in a clear and simple way. | ||
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|| Depending on the value of a variable, it allows to perform the statement corresponding to the case keyword. | || Depending on the value of a variable, it allows to perform the statement corresponding to the case keyword. | ||
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| | There can be as many branches as required. | | | There can be as many branches as required. | ||
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| Let us try with an example. | | Let us try with an example. | ||
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| We will assign 100 to a variable 'n' and check the cases 42, 54 and a default case represented by else. | | We will assign 100 to a variable 'n' and check the cases 42, 54 and a default case represented by else. | ||
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| Cut, paste hit enter | | Cut, paste hit enter | ||
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| | Here we see the output . | | | Here we see the output . | ||
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|| This brings us to the end of this spoken tutorial on Conditional Branching using Scilab. | || This brings us to the end of this spoken tutorial on Conditional Branching using Scilab. | ||
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| In this tutorial we have learnt the if - elseif - else statement and the select statement. | | In this tutorial we have learnt the if - elseif - else statement and the select statement. | ||
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| | There are many other functions in Scilab which will be covered in other spoken tutorials. | | | There are many other functions in Scilab which will be covered in other spoken tutorials. | ||
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|| Keep watching the Scilab links. | || Keep watching the Scilab links. | ||
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| − | | 03 | + | | 03:27 |
|| Spoken Tutorials are part of the Talk to a Teacher project, supported by the National Mission on Education through ICT. | || Spoken Tutorials are part of the Talk to a Teacher project, supported by the National Mission on Education through ICT. | ||
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| | More information on the same is available on the following link | | | More information on the same is available on the following link | ||
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| − | | 03 | + | | 03:38 |
| |Thanks for joining good bye. | | |Thanks for joining good bye. | ||
|} | |} | ||
Revision as of 16:42, 10 July 2014
| Time | Narration |
| 00:01 | Welcome to the spoken tutorial on Conditional Branching in Scilab. |
| 00:04 | To practice this tutorial open the scilab console window on your computer |
| 00:09 | We will discuss two types of Conditional constructs in Scilab that is the "if-then-else" construct and the "select-case conditional" construct. |
| 00:19 | The if statement allows us to execute a group of statements if a given condition is satisfied. |
| 00:24 | Let me give you an example: |
| 00:27 | n is equal 42 if n is equal to equal to 42 then disp the number is 42, end of if construct. |
| 00:37 | Here 'is equal to' is the assignment operator, which assigns 42 to the variable n, |
| 00:43 | And 'is equal to is equal to' is the equality operator, which checks for the equality between the right hand and the left hand side operands. |
| 00:51 | In this case n and 42 and gives the result in Boolean. |
| 00:57 | Here the comma after the first line is optional, |
| 01:01 | Also the then keyword is optional. |
| 01:04 | It can be replaced by a comma or a carriage return. |
| 01:08 | The end keyword ends the "if" construct. |
| 01:11 | On executing the script, we see the output as follows. |
| 01:20 | So far we have seen how to execute a set of statements if a condition is true. |
| 01:26 | Now we will see how to execute another set of statements if that condition is false or we may wish to check if some other condition is satisfied. |
| 01:36 | We can do this by using 'else' or 'elseif' keyword respectively. |
| 01:40 | Here is how we do it
|
| 01:41 | In this example, 54 is assigned to a variable n and checked for both true condition using 'if' and false condition using 'else' as described: |
| 01:55 | I will cut this, paste in the scilab console hit enter |
| 02:03 | You see the output. |
| 02:05 | If you notice, the examples shown above are on multiple lines. |
| 02:09 | They can also be written in a single line with proper semicolons and commas. |
| 02:19 | I will cut this and paste in the scilab to execute. Hit enter |
| 02:27 | The select statement allows to combine several branches in a clear and simple way. |
| 02:31 | Depending on the value of a variable, it allows to perform the statement corresponding to the case keyword. |
| 02:38 | There can be as many branches as required. |
| 02:41 | Let us try with an example. |
| 02:44 | We will assign 100 to a variable 'n' and check the cases 42, 54 and a default case represented by else. |
| 02:59 | Cut, paste hit enter |
| 03:06 | Here we see the output . |
| 03:09 | This brings us to the end of this spoken tutorial on Conditional Branching using Scilab. |
| 03:14 | In this tutorial we have learnt the if - elseif - else statement and the select statement. |
| 03:20 | There are many other functions in Scilab which will be covered in other spoken tutorials. |
| 03:25 | Keep watching the Scilab links. |
| 03:27 | Spoken Tutorials are part of the Talk to a Teacher project, supported by the National Mission on Education through ICT. |
| 03:35 | More information on the same is available on the following link |
| 03:38 | Thanks for joining good bye. |
