Output of C programs | Set 44 (Structure & Union)

C Program to Store Information of Students Using Structure

Last Updated : 21 Aug, 2024

Write a C program to store the information of Students using a Structure.

A structure is a user-defined data type in C that is used to create a data type that can be used to group items of possibly different types into a single type.

Example

Input: Name: John Doe, Roll Number: 101, Marks: 85
Name: Jane Smith, Roll Number: 102, Marks: 90

Output: Name: John Doe, Roll Number: 101, Marks: 85
Name: Jane Smith, Roll Number: 102, Marks: 90

Store Information of Students Using Structure in C

The student information generally contains the following data:

Name
Roll Number
Age
Total Marks

Structure to Store the Student Information

The structure should be able to store the above information for each student. So, we will create a data field for each of this information in the structure:

struct Student { 
   int roll_number;
   int age;
   double total_marks;
   char name[100]; 
};

We keep the character array name at the end because in case of buffer overflow, it does not overwrite the other variables’ data in the structure.

Note: We can add more data fields in the structure according to our needs.

Implementation

Below is the C program to implement the structure to store the student information and print it:

C

// C Program to Store Information of Students Using Structure
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

// Create the student structure
struct Student {
    char* name;
    int roll_number;
    int age;
    double total_marks;
};

int main() {

    // Create an array of student structure variable with
  	// 5 Student's records
    struct Student students[5];
  	int n = sizeof(students)/sizeof(struct Student);

    // Get the students data
    students[0].roll_number = 1;
    students[0].name = "Geeks1";
    students[0].age = 12;
    students[0].total_marks = 78.50;

    students[1].roll_number = 5;
    students[1].name = "Geeks5";
    students[1].age = 10;
    students[1].total_marks = 56.84;

    students[2].roll_number = 2;
    students[2].name = "Geeks2";
    students[2].age = 11;
    students[2].total_marks = 87.94;

    students[3].roll_number = 4;
    students[3].name = "Geeks4";
    students[3].age = 12;
    students[3].total_marks = 89.78;

    students[4].roll_number = 3;
    students[4].name = "Geeks3";
    students[4].age = 13;
    students[4].total_marks = 78.55;

    // Print the Students information
    printf("========================================\n");
    printf("           Student Records              \n");
    printf("========================================\n");
    
    for (int i = 0; i < n; i++) {
        printf("\nStudent %d:\n", i + 1);
        printf("  Name        : %s\n", students[i].name);
        printf("  Roll Number : %d\n", students[i].roll_number);
        printf("  Age         : %d\n", students[i].age);
        printf("  Total Marks : %.2f\n", students[i].total_marks);
    }
    
    printf("========================================\n");

    return 0;
}

Output

========================================
           Student Records              
========================================

Student 1:
  Name        : Geeks1
  Roll Number : 1
  Age         : 12
  Total Marks : 78.50

Student 2:
  Name        : Geeks5
  Roll Number : 5
  Age         : 10
  Total Marks : 56.84

Student 3:
  Name        : Geeks2
  Roll Number : 2
  Age         : 11
  Total Marks : 87.94

Student 4:
  Name        : Geeks4
  Roll Number : 4
  Age         : 12
  Total Marks : 89.78

Student 5:
  Name        : Geeks3
  Roll Number : 3
  Age         : 13
  Total Marks : 78.55
========================================

Output of C programs | Set 44 (Structure & Union)

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