Accessing structure members

Accessing structure members

There are two different ways to access structure members 

 1) using dot (.) operator 

 2) using pointer to structure Accessing

 structure members using dot operator In this dot(.) operator is used between structure variable and structure member name. 

 Example: struct StudentInfo s1; 

 s1.Rno;  

 Here ‘s1’ is variable and ‘Rno’ is member of structure StudentInfo. Accessing structure members using pointer 

 In this -> operator is used between structure pointer variable and member name. 

 Example: struct StudentInfo *ptr, s1; 

 ptr=&s1; 

 ptr->Rno; 

 Here ‘*ptr’ is a pointer to structure StudentInfo which stores address of structure variable ‘s1’. So now through ‘ptr’ we can access ‘Rno’.

Copying structure variable

  There are two different ways to copy one structure variable into another. 

  Copying each structure member individually struct StudentInfo s1={1,‟xyz”,80.25}; 

  struct StudentInfo s2; 

  s2.Rno=s1.Rno; 

  strcpy(s2.Sname,s1.Sname); 

  s2.Percentage=s1.Percentage;  

  Copying entire structure variable using assignment operator 

   struct StudentInfo s1={1,‟xyz”,80.25}; 

  struct StudentInfo s2; 

  s2=s1; 

 Here all members of s1 will get copied into members of s2.

Also Read

1. C program using Array of Structure
2. Array of Structure
3. C program using structure
4. Calculation of size of Structure
5. Creation of structure variable
6. Syntax of Structure