`Qn-11.c`¶

Problem Statement

Write a program to explain, how an array of stucture can you defined and accessed.

Metadata¶

Property	Detail
Author	Amit Dutta amitdutta4255@gmail.com
Date	06 Mar 2026
License	MIT License (See the LICENSE file for details)
Difficulty	Beginner (index: 3 / 10)

Concepts¶

Beta Feature

This concept detection system is still in beta and may occasionally show incorrect or incomplete results.

Array
Sorting (possible)
Iteration

Actions¶

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Source Code¶

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

// 1. Defining the Structure
struct Student {
    int rollNo;
    char name[50];
    float marks;
};

int main() {
    int n, i;

    printf("Enter the number of students: ");
    scanf("%d", &n);

    // 2. Defining an Array of Structures
    // This creates 'n' blocks of memory, each large enough to hold a Student
    struct Student s[n];

    // 3. Accessing members to STORE data
    for (i = 0; i < n; i++) {
        printf("\nEnter details for Student %d:\n", i + 1);
        printf("Roll No: ");
        scanf("%d", &s[i].rollNo); // Using dot (.) operator with index [i]

        printf("Name: ");
        getchar(); // To clear the newline character from buffer
        fgets(s[i].name, sizeof(s[i].name), stdin);
        s[i].name[strcspn(s[i].name, "\n")] = '\0'; // Safe newline removal

        printf("Marks: ");
        scanf("%f", &s[i].marks);
    }

    // 4. Accessing members to DISPLAY data
    printf("\n--- Student Records ---\n");
    printf("ID\tName\t\tMarks\n");
    for (i = 0; i < n; i++) {
        // Accessing using s[i].member
        printf("%d\t%-15s\t%.2f\n", s[i].rollNo, s[i].name, s[i].marks);
    }

    return 0;
}

Explanation¶

Explain with AI

Copy the prompt below and paste it into any AI assistant.

    You are explaining a C programming code to a beginner.

    STRICT RULES:

    - Only use the given code. Do NOT assume anything not present.

    - Do NOT add extra examples.

    - Keep explanation clear and short.

    - If something is unclear, say "Not clear from code".

    - Follow the exact format below. Do NOT change headings.

    FORMAT:

    [START]

    ## What it does

    (Explain the overall purpose in 1-2 sentences)

    ## Step-by-step

    (Explain how the code works in steps, simple language)

    ## Key Concepts

    (List concepts like loop, condition, function, etc.)

    ## Notes

    (Mention any limitations, errors, or assumptions)

    [END]

    CODE (Qn-11.c):

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

    // 1. Defining the Structure
    struct Student {
        int rollNo;
        char name[50];
        float marks;
    };

    int main() {
        int n, i;

        printf("Enter the number of students: ");
        scanf("%d", &n);

        // 2. Defining an Array of Structures
        // This creates 'n' blocks of memory, each large enough to hold a Student
        struct Student s[n];

        // 3. Accessing members to STORE data
        for (i = 0; i < n; i++) {
            printf("\nEnter details for Student %d:\n", i + 1);
            printf("Roll No: ");
            scanf("%d", &s[i].rollNo); // Using dot (.) operator with index [i]

            printf("Name: ");
            getchar(); // To clear the newline character from buffer
            fgets(s[i].name, sizeof(s[i].name), stdin);
            s[i].name[strcspn(s[i].name, "\n")] = '\0'; // Safe newline removal

            printf("Marks: ");
            scanf("%f", &s[i].marks);
        }

        // 4. Accessing members to DISPLAY data
        printf("\n--- Student Records ---\n");
        printf("ID\tName\t\tMarks\n");
        for (i = 0; i < n; i++) {
            // Accessing using s[i].member
            printf("%d\t%-15s\t%.2f\n", s[i].rollNo, s[i].name, s[i].marks);
        }

        return 0;
    }

Qn-11.c¶