Skip to main content

Featured

Merge Sort in C++

  Merge Sort in C++ Introduction Merge Sort is a popular sorting algorithm that follows the Divide and Conquer approach. It divides an array into smaller subarrays, recursively sorts those subarrays, and finally merges the sorted subarrays to produce a completely sorted array. In this tutorial, we will learn how to implement Merge Sort in C++ . The program divides the array into two halves using the mid index, recursively sorts both halves, and then combines them using the merge() function. Merge Sort has a time complexity of O(n log n) in the best, average, and worst cases. Table of Contents Algorithm C++ Program Input Sample Output Output Explanation Dry Run Flow of Execution Time Complexity Space Complexity Applications Key Points Interview Questions Frequently Asked Questions Keywords Conclusion Algorithm Start the program. Read the size of the array. Read the array elements from the user. Call the mer...
Post a Comment
Read more
Labels

Add One to Number Represented by Array In C

Add One to Number Represented as Array in C

➕ Add One to Number Represented by Array

#include <stdio.h>

int main()
{
    int size;
    // printf("Enter a array size: ");
    scanf("%d", &size);
    
    int a[size];
    // printf("Enter a array elements: ");
    for (int i = 0; i < size; i++)
    {
        scanf("%d", &a[i]);
    }

    int num = 0;
    for (int i = 0; i < size; i++)
    {
        num = num * 10 + a[i];
    }

    num += 1;
    printf("\nNumber after adding 1: %d\n", num);

    int temp = num;
    int result[10];
    int index = 0;

    while (temp > 0)
    {
        result[index++] = temp % 10;
        temp /= 10;
    }

    printf("Result in array: ");
    for (int i = index - 1; i >= 0; i--)
    {
        printf("%d ", result[i]);
    }
    printf("\n");

    return 0;
}

📘 Explanation:

🔹 This program reads digits of a number into an array.
🔹 Combines those digits to form the actual number using positional multiplication.
🔹 Adds 1 to the number.
🔹 Breaks the result back into digits and stores them in another array.
🔹 Finally, it prints the updated digits from the result array.

🧪 Sample Output:

Input:
5
1 2 3 4 5

Output:
Number after adding 1: 12346
Result in array: 1 2 3 4 6

🏷️ Keywords:

add one to number in array, C program number to array, digit manipulation in C, array math in C, convert array to integer, beginner C array program

Labels:

Comments

Post a Comment

Popular Posts

🌙