Define the structure

First, you need to define the structure using the struct keyword. The structure definition includes the data members (variables) that will be part of the structure.

struct Person {
            char name[50];
            int age;
            float height;
        };

In this example, we define a structure named Person with three members: name (a character array), age (an integer), and height (a float).

Declare Structure Variables:

The syntax for declaring structure variables in C is as follows:

struct structure_name {
    // member1 declaration
    // member2 declaration
    // ...
};

// Declare structure variables
struct structure_name variable1, variable2, ...;

Here's a breakdown:

• Use the struct keyword to define a structure.
• Provide a name for the structure (structure_name in the example).
• Inside the curly braces {}, declare the members of the structure, each with its own data type.
• After defining the structure, you can declare variables of that structure type by using the structure name followed by variable names (comma-separated if declaring multiple variables).
This is done similarly to declaring variables of any other data type.

Example:
        struct Person person1, person2;
        Here, we declare two variables of type struct Person named person1 and person2.
        
        

Initialize Structure Variables

You can initialize the structure variables at the time of declaration or later using the assignment operator (=).
            struct Person person1 = {"John Doe", 25, 5.8};
            
            Alternatively, you can initialize the members separately:
            person2.age = 30;
            person2.height = 6.1;
            strcpy(person2.name, "Jane Smith");