Initializing and Accessing of structure Member

Initializing and Accessing Structure member In C Language | Programmerdouts programmerdouts.blogspot.com/2019/06/initialize-access-strucure-c.html

Initializing and Accessing structure Member As we have learned how to declare and define the structure, now it's time for initializing the structure and Accessing Element of structure.

Let's start doing it.

Let's define a structure Student with name , rollno, div as it's attribute.

Definition: struct student //structure name { int rollno; //member1 ,integer variable which will store, //student roll no. char name[20]; //member2 a character array of 20 character //which will store name of student. char div; //member3 a character variable, //which will store division of student. }; As we have define structure let's initialize it.

Initializing the variable s1

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void main() { struct student s1={1,"Roy","A"}; //initialized structure student. //s1 is a variable of student type.; //as student is a new data type which is, //define by us. //student s1 //roll no = 1, name=Roy , div = A }

For accessing member of structure we use '.'dot operator.

Syntax: for accessing element structure_variable_name.member_name;

NOw let's access the element of initialized variable s1 of student datatype.

Accessing rollno void main() { int s_rollno; //Accessing the member "roll no" of s1 variable. s_rollno = s1.rollno; // assigning rollno of s1 student to variable s_rollno }

Accessing name

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void main() { int s_name[20]; //Accessing the member "name" of s1 variable. strcpy(s_name,s1.name); // assigning name of s1 student to character array s_name }

Accessing div void main() { int s_div; //Accessing the member "div" of s1 variable. s_div = s1.div; // assigning div of s1 student to character variable s_div }

Let's define a structure employee with employee_id , name, salary as it's attribute.

Definition: struct employee //structure name { int employee_id; //member1 ,integer variable which will store, // employee id. char name[20]; //member2 a character array of 20 character //which will store name of employee. int salary; //member3 a integer variable, //which will store salary of employee. };

As we have define structure let's initialize it.

Initializing the variable E1 3/8

void main() { struct student E1={20,"Roy",500000}; //initialized structure employee. //E1 is a variable of employee type.; //as employee is a new data type which is, //define by us. //employee E1 //employee_id = 20, name=Roy , salary = 500000 }

NOw let's access the element of initialized variable E1 of student datatype.

Accessing employee_id void main() { int emp_id; //Accessing the member "employee_id" of E1 variable. emp_id = E1.employee_id; // assigning employee_id of E1 employee to variable emp_id }

Accessing name void main() { char e_name[20]; //Accessing the member "name" of E1 variable. strcpy(e_name,E1.name); // assigning name of E1 employee to character array s_name }

Accessing salary 4/8

void main() { int e_salary; //Accessing the member "employee_Salary" of s1 variable. e_salary = E1.salary; // assigning salary of E1 employee to integer variable e_salary }

Let's define a structure book with book_id , book_name, book_price as it's attribute.

Definition: struct book //structure name { int book_id; //member1 ,integer variable which will store, // book id. char book_name[20]; //member2 a character array of 20 character //which will store name of book. int book_price; //member3 a integer variable, //which will store price of book. };

As we have define structure let's initialize it.

Initializing the variable B1 void main() { struct book B1={10,"learn c",200}; //initialized structure book. //B1 is a variable of book type.; //as book is a new data type which is, //define by us. //book B1 //book_id = 10, name="learn c" , book_price = 200

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}

NOw let's access the element of initialized variable B1 of employee datatype.

Accessing book_id void main() { int b_id; //Accessing the member "book_id" of B1 variable. b_id = B1.book_id; // assigning book_id to variable b_id }

Accessing name void main() { char b_name[20]; //Accessing the member "book_name" of B1 variable. strcpy(b_name,B1.book_name); // assigning book name of B1 book to character array b_name }

Accessing Price void main(), { int b_price; //Accessing the member "employee_Salary" of s1 variable. b_price = B1.book_price; // assigning price of B1 book to integer variable b_salary }

This is how we Access and initialize the structure.

Do more practice for having good command on structure.

They are used in data structures Like Tress, linked list etc 6/8

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