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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...
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C Program to Convert Hexadecimal to Octal

C Program to Convert Hexadecimal to Octal

✅ C Program to Convert Hexadecimal to Octal

#include <stdio.h>
int main() {
    int num;
    printf("Enter a hexadecimal number: ");
    scanf("%x", &num);   // read hex input

    printf("Octal: %o\n", num);   // print in octal
    return 0;
}

📘 Explanation:

This program converts a hexadecimal number into its octal form.

  • scanf("%x", &num) → reads a number in hexadecimal format and stores it as an integer.
  • printf("%o", num) → prints the same number in octal format.
  • No manual conversion is needed — C automatically handles it using format specifiers.

🧾 Sample Output:

Enter a hexadecimal number: 1A
Octal: 32

Enter a hexadecimal number: FF
Octal: 377

🔑 Keywords:

C program hex to octal, hexadecimal to octal conversion, scanf %x example, printf %o example, number system conversion in C

📌 Hashtags:

#CProgramming #HexToOctal #CodingForBeginners #InterviewQuestions #LearnC

🔍 Search Description:

This C program converts a hexadecimal number to octal using scanf with %x and printf with %o format specifiers. Includes explanation and sample outputs.

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