Difference between revisions of "C-and-C++/C4/Working-With-Structures/English-timed"
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Revision as of 15:30, 7 February 2014
| Time | Narration
|
| 00.01 | Welcome to the spoken-tutorial on Structures in C and C++. |
| 00.06 | In this tutorial we will learn, |
| 00.08 | What is a Structure. |
| 00.10 | Declaration of a structure |
| 00.13 | We will do this through an example |
| 00.15 | To record this tutorial, I am using, |
| 00.18 | Ubuntu Operating System version 11.04, |
| 00.22 | gcc and g++ Compiler version 4.6.1 |
| 00.28 | Let us start with an introduction to Structure |
| 00.31 | When one or more variables are grouped under one name it is known as structure. |
| 00.37 | Strucutre is used to group different data into one object.
|
| 00.42 | It is called as compound data-type. |
| 00.45 | It is used to group related information together. |
| 00.49 | Now we will see the syntax to declare a structure |
| 00.52 | Here the keyword struct tells the compiler that a structure is declared |
| 00.59 | strcut_name is the name of the structure. |
| 01.02 | eg. struct employee; |
| 01.04 | You can give any name. |
| 01.07 | Now we will see how to declare a structure variable. |
| 01.10 | The syntax for this is |
| 01.13 | struct struct_name and struct_var; |
| 01.17 | struct_var is the variable of type struc_name |
| 01.21 | example, struct employee addr;
|
| 01.26 | addr is the variable of type employee. |
| 01.30 | Let us move on to our example |
| 01.33 | I have already typed the program on the editor so let me open it. |
| 01.37 | Note that our filename is structure.c. |
| 01.41 | In this program we will calculate the total marks of three subjects using structure |
| 01.48 | Let me explain the code now. |
| 01.51 | This is our header file. |
| 01.53 | Here we have declared a structure as student. |
| 01.57 | Then we have declared three integer variables as english, maths and science.
|
| 02.03 | Variables defined under the structure are called as members of the structure. |
| 02.09 | This is our main function .
|
| 02.11 | Here we have declared an integer variable total. |
| 02.16 | Now we have declared a structure variable stud, stud is the variable of type student,it is used to access and modify the structure members |
| 02.28 | Here we have modified the members |
| 02.31 | By assigning them values as 75, 70 and 65. |
| 02.37 | Here we calculate the total of three subjects. |
| 02.41 | Then we print the result. |
| 02.44 | This is our return statement. |
| 02.46 | Now click on Save |
| 02.48 | Let us execute the program
|
| 02.50 | Please open the terminal window by pressing
|
| 02.54 | Ctrl, Alt and T keys simultaneously on your keyboard. |
| 02.59 | To compile type gcc space structure.c space hyphen o space struct and press Enter
|
| 03.12 | To execute type (dot slash)./struct. Press Enter |
| 03.17 | The output is displayed as:
|
| 03.20 | Total is 210 |
| 03.22 | Now we will execute the same program in C++ |
| 03.26 | Come back to our program. |
| 03.28 | I will edit the same code |
| 03.30 | First press shift, Ctrl add S keys simultaneously on the keyboard |
| 03.37 | Now save the file with an extension .cpp |
| 03.41 | and click on save |
| 03.43 | Lets change the header file as iostream |
| 03.47 | Now include the using statement |
| 03.53 | and click on save |
| 03.56 | Structure declaration in C++ is same as in C |
| 04.01 | So no need to change anything here |
| 04.05 | At the end we will replace the printf statement with the cout statement. |
| 04.12 | Delete the format specifier and (backslash) \n |
| 04.15 | Now delete the comma |
| 04.17 | Type two opening angle brackets. |
| 04.20 | Here delete the closing bracket |
| 04.22 | and type two opening angle brackets |
| 04.25 | And within the double quotes type \n |
| 04.29 | Now click on Save |
| 04.31 | Let us execute the program |
| 04.33 | Come back to our terminal |
| 04.35 | To compile type g++ space structure.cpp space hyphen o space struct1 |
| 04.46 | Here we have struct1 because we dont want to overwrite the output parameters struct for the file structure.c |
| 04.55 | Now press Enter |
| 04.57 | To execute type (dot slash) ./struct1 Press Enter
|
| 05.03 | The output is displayed as: |
| 05.05 | Total is 210 |
| 05.08 | You can see that the output is same as our C code |
| 05.12 | Now let us go back to our slides. |
| 05.14 | We will summarize now. In this tutorial we learned, |
| 05.18 | Structure. |
| 05.19 | Syntax of a structure. |
| 05.20 | eg. struct struct_name;
|
| 05.23 | To access members of a structure. |
| 05.25 | Eg: stud.maths = 75; |
| 05.30 | And to add the structure variables. |
| 05.33 | Eg: total = stud.english+ stud.maths + stud.science;
|
| 05.40 | As an assignment, |
| 05.41 | Write a program to diplay records of an employee. |
| 05.44 | Like name, address, designation, and salary. |
| 05.49 | Watch the video available at the link shown below |
| 05.52 | It summarizes the Spoken Tutorial project |
| 05.54 | If you do not have good bandwidth, you can download and watch it |
| 05.59 | The Spoken Tutorial Project Team |
| 06.01 | Conducts workshops using spoken tutorials |
| 06.04 | Gives certificates to those who pass an online test |
| 06.08 | For more details, please write to, contact@spoken-tutorial.org |
| 06.15 | Spoken Tutorial Project is a part of Talk to a Teacher project |
| 06.18 | It is supported by the National Mission on Education through ICT, MHRD, Government of India |
| 06.25 | More information on this Mission is available at the link shown below |
| 06.29 | This is Ashwini Patil from IIT Bombay signing off |
| 06.33 | Thank You for watching. |
Contributors and Content Editors
Kavita salve, Krupali, PoojaMoolya, Pratik kamble, Sandhya.np14, Sneha
