Difference between revisions of "C-and-C++/C4/Working-With-Structures/English-timed"

|What is a '''Structure. '''

|Declaration of a '''structure'''

|We will do this through an example

| To record this tutorial, I am using,

| '''gcc '''and '''g++ Compiler''' version 4.6.1  

|Let us start with an introduction to '''Structure '''

|Strucutre is used to group different data into one object.  

|  Now we will see the syntax to declare a '''structure'''

|Here the keyword '''struct''' tells the compiler that a structure is declared  

|Now we will see how to declare a '''structure variable. '''

|'''struct_var''' is the variable of type '''struc_name'''  

|Let us move on to our example  

|I have already typed the program on the editor so let me open it.

|Note that our filename is '''structure.c.'''

|In this program we will calculate the total marks of three subjects using structure  

| Then we have declared three integer variables as '''english, maths''' and '''science. '''  

|This is our main function .

| Here we have declared an integer variable '''total. '''  

| 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  

| Here we have modified the members   

|This is our return statement.  

|Now click on '''Save '''

|Let us execute the program  

| To compile type '''gcc space structure.c space hyphen o space struct''' and press''' Enter'''  

|To execute type (dot slash)'''./struct.''' Press Enter  

|Now we will execute the same program in C++  

|I will edit the same code  

|First press '''shift, Ctrl and  S''' keys simultaneously on the keyboard  

| and click on save  

| Lets change the header file as '''iostream'''

|and click on '''save'''

|Structure declaration in '''C++''' is same as in '''C'''

|So no need to change anything here  

|At the end we will replace the printf statement with the cout   statement.  

|Delete the format specifier and (backslash) \n

|Now delete the comma

|Here delete the closing bracket  

|and type two opening angle brackets  

|And within the double quotes type \n

|Now click on '''Save'''

|Let us execute the program  

|Come back to our terminal  

|To compile type '''g++ space structure.cpp space hyphen o space struct1 '''

| Here we have struct1 because we dont want to overwrite the output parameters struct for the file '''structure.c '''

|Now press Enter  

|To execute type (dot slash) '''./struct1''' Press '''Enter'''  

|You can see that the output is same as our C code  

|Structure.

|Syntax of a structure.

|To access members of a structure.  

|Eg: '''stud.maths = 75; '''

|And to add the structure variables.  

|Eg: '''total = stud.english+ stud.maths + stud.science; '''

|Write a program to diplay records of an employee.  

|Watch the video available at the link shown below

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| This is Ashwini Patil from IIT Bombay signing off