PHP-and-MySQL/C2/Arithmatic-Operators/English-timed - Revision history

Sandhya.np14 at 11:54, 19 May 2015

2015-05-19T11:54:54Z

Sandhya.np14 at 11:46, 19 May 2015

2015-05-19T11:46:57Z

Pratik kamble at 05:36, 10 July 2014

2014-07-10T05:36:17Z

Minal: Created page with '{|Border=1 !Time !Narration |- |0:00 |Welcome to this tutorial on basic arithmetic operators. |- |0:03 |I'll first go through plus, minus, multiply and divide operations. |- |0:0…'

2013-01-02T10:20:47Z

Created page with '{|Border=1 !Time !Narration |- |0:00 |Welcome to this tutorial on basic arithmetic operators. |- |0:03 |I'll first go through plus, minus, multiply and divide operations. |- |0:0…'

New page

{|Border=1
!Time
!Narration
|-
|0:00
|Welcome to this tutorial on basic arithmetic operators.
|-
|0:03
|I'll first go through plus, minus, multiply and divide operations.
|-
|0:09
|These are written as p lus, minus, multiply as an asterisk and divide as a forward slash.
|-
|0:17
|So, I will have 2 variables.
|-
|0:20
|I'll create a variable called "num1" and I'll save that as value equal to "10" and "num2" is equal to "2".
|-
|0:30
|So, these are both integer numbers with no decimal point.
|-
|0:34
|Okay, now, say I want to add "num1" and "num2" together.
|-
|0:40
|So I echo out the answer of "num1" added to "num2".
|-
|0:44
|Let's test it out.
|-
|0:47
|So, that's "12". 10 and 2, num1 and num2, when 10 and 2 are added, the answer is "12".
|-
|0:55
|Okay now let's try minus. We will just replace the minus symbol there.
|-
|1:01
|Refresh and that will be "8".
|-
|1:05
|Now lets try multiplication. 10 times 2 is 20 and we've got "20".
|-
|1:11
|Next, 10 divided by 2 is just half of 10 which is "5".
|-
|1:18
|Now, what we can do is we can add something on the end of this.
|-
|1:24
|So, let's say this is divided by num2.
|-
|1:27
|So, what I think this operation will do is, it will add "num1" and "num2", so that is 10 and 2 which will give us 12 and then 12 divided by 2.
|-
|1:39
|So, 12 divided by 2 should give 6.
|-
|1:43
|But actually what this does is it takes num2 and divides it by num2 which will give 1 and add num1 to that.
|-
|1:56
|So, that means, instead of 6 we will get 11.
|-
|2:00
|Now, the reason for this is that division operator will always work before addition operator. The same with multiply
|-
|2:10
|Now, to solve this, we should put brackets.
|-
|2:16
|The brackets will say - we'll take this operation first, do whatever is in here and then continue to divide by whatever this could be an integer or a variable.
|-
|2:29
|So, here what it will do is num1 plus num2 which is 10 plus 2 which gives us 12 divided by 2 which should give us 6.
|-
|2:39
|Let's refresh that and we can see that it worked!
|-
|2:43
|So, these are the basic arithmetic operators which are simple to use.
|-
|2:48
|If you come across any problems, always verify your calculations with a calculator to make sure they're working.
|-
|2:55
|We'll see a few more of these soon.
|-
|2:58
|We'll learn about the increment arithmetic operator which increments by 1 but I'll use that a little later.
|-
|3:05
|So, practice these and make sure you learn them well.
|-
|3:09
|Thanks for watching. This is Arvind dubbing for the Spoken Tutorial project.

@@ Line 16: / Line 16: @@
 |-
 |00:20
-|I'll create a variable called "num1" and I'll '''save''' that as value equal to 10 and "num2" is equal to 2.
+|I'll create a variable called "$num1" and I'll '''save''' that as value equal to 10 and "$num2" is equal to 2.
 |-
 |00:30
@@ Line 25: / Line 25: @@
 |-
 |00:40
-|So I '''echo''' out the answer of "num1" added to "num2".
+|So I '''echo''' out the answer of "$num1" added to "$num2".
 |-
 |00:44
@@ Line 91: / Line 91: @@
 |-
 |03:05
-|So, practice these and make sure you learn them well.
+|Just practice these and make sure you learn them well.
 |-
 |03:09
 |Thanks for watching. This is Arvind, dubbing for the Spoken Tutorial project.

@@ Line 4: / Line 4: @@
 |-
 |00:00
-|Welcome to this tutorial on basic arithmetic operators.
+|Welcome to this tutorial on basic '''Arithmetic Operators'''.
 |-
 |00:03
@@ Line 10: / Line 10: @@
 |-
 |00:09
-|These are written as p lus, minus, multiply as an asterisk and divide as a forward slash.
+|These are written as plus (+), minus (-), multiply as an asterisk (*) and divide as a forward slash (/).
 |-
 |00:17
@@ Line 16: / Line 16: @@
 |-
 |00:20
-|I'll create a variable called "num1" and I'll save that as value equal to "10" and "num2" is equal to "2".
+|I'll create a variable called "num1" and I'll '''save''' that as value equal to 10 and "num2" is equal to 2.
 |-
 |00:30
-|So, these are both integer numbers with no decimal point.
+|So, these are both '''integer''' numbers with no decimal point.
 |-
 |00:34
@@ Line 25: / Line 25: @@
 |-
 |00:40
-|So I echo out the answer of "num1" added to "num2".
+|So I '''echo''' out the answer of "num1" added to "num2".
 |-
 |00:44
@@ Line 31: / Line 31: @@
 |-
 |00:47
-|So, that's "12".  10 and 2, num1 and num2, when 10 and 2 are added, the answer is "12".
+|So, that's "12".  10 and 2, 'num1' and 'num2'; when 10 and 2 are added, the answer is "12".
 |-
 |00:55
-|Okay now let's try minus. We will just replace the minus symbol there.
+|Okay. Now let's try minus. We will just replace the minus symbol there.
 |-
 |01:01
-|Refresh and that will be "8".
+|'''Refresh''' and that will be "8".
 |-
 |01:05
-|Now lets try multiplication.  10 times 2 is 20 and we've got "20".
+|Now let's try multiplication. 10 times 2 is 20 and we've got "20".
 |-
 |01:11
@@ Line 49: / Line 49: @@
 |-
 |01:24
-|So, let's say this is divided by num2.
+|So, let's say this is divided by 'num2'.
 |-
 |01:27
@@ Line 58: / Line 58: @@
 |-
 |01:43
-|But actually what this does is it takes num2 and divides it by num2 which will give 1 and add num1 to that.
+|But actually what this does is, it takes 'num2' and divides it by 'num2' which will give 1 and add 'num1' to that.
 |-
 |01:56
@@ Line 64: / Line 64: @@
 |-
 |02:00
-|Now, the reason for this is that division operator will always work before addition operator.  The same with multiply
+|Now, the reason for this is that division operator will always work before addition operator.  The same with multiply.
 |-
 |02:10
@@ Line 73: / Line 73: @@
 |-
 |02:29
-|So, here what it will do is num1 plus num2 which is 10 plus 2 which gives us 12 divided by 2 which should give us 6.
+|So, here what it will do is 'num1' plus 'num2' which is 10 plus 2 which gives us 12 divided by 2 which should give us 6.
 |-
 |02:39
-|Let's refresh that and we can see that it worked!
+|Let's '''refresh''' that and we can see that it worked!
 |-
 |02:43
-|So, these are the basic arithmetic operators which are simple to use.
+|So, these are the basic '''arithmetic operators''' which are simple to use.
 |-
 |02:48
@@ Line 88: / Line 88: @@
 |-
 |02:58
-|We'll learn about the increment arithmetic operator which increments by 1 but I'll use that a little later.
+|We'll learn about the '''increment arithmetic operator''' which increments by 1 but I'll use that a little later.
 |-
 |03:05
@@ Line 94: / Line 94: @@
 |-
 |03:09
-|Thanks for watching.  This is Arvind dubbing for the Spoken Tutorial project.
+|Thanks for watching. This is Arvind, dubbing for the Spoken Tutorial project.