The document explains structures in C programming, defining them as user-defined data types that group various variables for better organization of complex data. It details the syntax for defining structures, accessing and modifying their members, and presents examples, including nested structures. Advantages of using structures include improved code readability and easier data handling.

1. Understanding Structures in C
Programming

2. What is a Structure?
• A user-defined data type that allows grouping
of different types of variables.
• Useful for organizing complex data.

3. Why Use Structures?
Advantages:
• - Organizes data logically.
• - Makes code more readable and manageable.
• - Enables easier data handling for complex
data types (like a student record).

4. Syntax of a Structure
• Defining a Structure:
struct StructureName {
dataType member1;
dataType member2;
};
• Example:
struct Student {
char name[50];
int age;
float grade;
};

5. Accessing Structure Members
• Accessing members using the dot operator:
• s1.age = 20;
• s1.grade = 85.5;

6. Modifying Structure Members
• Use a function to modify:
void modifyStudent(struct Student *s, const
char *newName, int newAge, float newGrade) {
strcpy(s->name, newName);
s->age = newAge;
s->grade = newGrade;
};

7. Printing Structure Contents
• Function to print student details:
void printStudent(struct Student s) {
printf("Name: %s, Age: %d, Grade: %.2fn",
s.name, s.age, s.grade);
};

8. Nested Structures
• Define Address structure:
struct Address {
char city[50];
char state[50];
};
• Define Student structure:
struct Student {
char name[50];
int age;
struct Address addr;
};