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APC-S-005.c

Problem Statement

Write to reverse a number.

Metadata

Property Detail
Author Amit Dutta (amitdutta4255@gmail.com)
License MIT
Difficulty Beginner (index: 1 / 10)

Concepts

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  • Recursion
  • Pointers
  • Iteration

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Source Code

#include <stdio.h>
#include <conio.h>

void main()
{
    clrscr();
    int n, reverse = 0, rem;
    printf("Enter the numner : ");
    scanf("%d", &n);
    while (n != 0)
    {
        rem = n % 10;
        reverse = reverse * 10 + rem;
        n /= 10;
    }
    printf("Reversed Number : %d", reverse);
    getch();
}

Explanation

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    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 (APC-S-005.c):

    #include <stdio.h>
    #include <conio.h>

    void main()
    {
        clrscr();
        int n, reverse = 0, rem;
        printf("Enter the numner : ");
        scanf("%d", &n);
        while (n != 0)
        {
            rem = n % 10;
            reverse = reverse * 10 + rem;
            n /= 10;
        }
        printf("Reversed Number : %d", reverse);
        getch();
    }