Structures in C

C 150 views Dec 22, 2025 1 min read

A structure is a user-defined data type that allows grouping of different data types under a single name.

Need for Structures

Store related data together
Represent real-world entities
Overcome limitations of arrays

Declaration of Structure

struct structure_name {
    data_type member1;
    data_type member2;
};

Example Declaration

struct student {
    int roll;
    char name[20];
    float marks;
};

Declaring Structure Variables

struct student s1, s2;

Accessing Structure Members

Use dot (.) operator

s1.roll = 1;

Example Program

#include 

struct student {
    int roll;
    char name[20];
    float marks;
};

int main() {
    struct student s1;

    s1.roll = 101;
    printf("Enter name: ");
    scanf("%s", s1.name);
    s1.marks = 85.5;

    printf("Roll: %d\n", s1.roll);
    printf("Name: %s\n", s1.name);
    printf("Marks: %.2f", s1.marks);

    return 0;
}