C Structure Test

The C can define and use structures to group related data elements together into a single composite data type. Here’s an example of how to define, create, and use structures in C:

#include <stdio.h>
#include <string.h>

// Define a structure named "Person"
struct Person {
    char name[50];
    int age;
};

int main() {
    // Create an instance of the "Person" structure
    struct Person person1;

    // Initialize the structure fields
    strcpy(person1.name, "John");
    person1.age = 30;

    // Access and print the structure fields
    printf("Name: %s\n", person1.name);
    printf("Age: %d\n", person1.age);

    // You can also create an instance and initialize it directly
    struct Person person2 = {"Alice", 25};

    // Access and print the fields of the second structure
    printf("Name: %s\n", person2.name);
    printf("Age: %d\n", person2.age);

    return 0;
}

In this example:

1. We define a structure named “Person” using the struct keyword. It has two fields: name (a character array) and age (an integer).
2. In the main() function, we create two instances of the “Person” structure, person1 and person2.
3. We initialize the fields of person1 and person2 using the strcpy() function for the name field and direct assignment for the age field.
4. We access and print the fields of both person1 and person2.

Structures are a fundamental way to organize and manage data in C, especially when you need to group multiple related pieces of information together into a single unit. You can define more complex structures with nested structures, arrays, and pointers as members, making them versatile for various data storage needs.