Write a C program that reads the account number, name and address of ten customers from users and displays the account number, name and address of these customers using Array and structure. [8] OR…

Model Answer for NEB 2082 (Class 12, Computer Science)

Question: Write a C program that reads the account_number, name, and address of ten customers from users and displays the account_number, name, and address of these customers using Array and structure.

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Solution: C Program Using Arrays and Structures

Step 1: Define the Structure

We first define a structure Customer to store the details of each customer:

• account_number (integer)
• name (string)
• address (string)

Step 2: Declare an Array of Structures

We declare an array of 10 structures (Customer cust[10]) to store details of 10 customers.

Step 3: Input Data from User

Using a loop, we read the details of each customer and store them in the array.

Step 4: Display the Data

We iterate through the array and print the stored details.

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Complete C Program

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

// Define the structure for customer details
struct Customer {
    int account_number;
    char name[50];
    char address[100];
};

int main() {
    struct Customer cust[10]; // Array of 10 customers
    int i;

    // Input data for 10 customers
    printf("Enter details of 10 customers:\n");
    for (i = 0; i < 10; i++) {
        printf("\nCustomer %d:\n", i + 1);
        printf("Account Number: ");
        scanf("%d", &cust[i].account_number);
        printf("Name: ");
        scanf(" %[^\n]s", cust[i].name); // Read full name (including spaces)
        printf("Address: ");
        scanf(" %[^\n]s", cust[i].address); // Read full address (including spaces)
    }

    // Display the stored data
    printf("\n--- Customer Details ---\n");
    for (i = 0; i < 10; i++) {
        printf("\nCustomer %d:\n", i + 1);
        printf("Account Number: %d\n", cust[i].account_number);
        printf("Name: %s\n", cust[i].name);
        printf("Address: %s\n", cust[i].address);
    }

    return 0;
}

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How the Program Works

1. Structure Definition (struct Customer)

   • Stores account_number, name, and address for each customer.

2. Array Declaration (cust[10])

   • An array of 10 structures is created to hold details of 10 customers.

3. Input Loop (for (i = 0; i < 10; i++))

   • Uses scanf with %[^\n]s to read full names and addresses (including spaces).
   • Stores each customer’s data in cust[i].

4. Output Loop (for (i = 0; i < 10; i++))

   • Prints the stored details in a structured format.

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Sample Input & Output

Input:

Enter details of 10 customers:

Customer 1:
Account Number: 1001
Name: Ram Thapa
Address: Kathmandu

Customer 2:
Account Number: 1002
Name: Sita Gurung
Address: Pokhara
...

(Repeat for 10 customers)

Output:

--- Customer Details ---

Customer 1:
Account Number: 1001
Name: Ram Thapa
Address: Kathmandu

Customer 2:
Account Number: 1002
Name: Sita Gurung
Address: Pokhara
...

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Key Concepts Used

1. Structures (struct)

   • Groups related data (e.g., account_number, name, address) under one name (Customer).

2. Arrays of Structures

   • cust[10] allows storing 10 customer records efficiently.

3. Dynamic Input Handling (scanf(" %[^\n]s", ...))

   • Reads full names/addresses (including spaces) until Enter is pressed.

4. Looping (for loop)

   • Used to input and display data for all 10 customers.

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Note: This program ensures modularity (using structures) and scalability (easily extendable to more customers). The use of arrays and structures makes data management efficient.