Octal to Decimal Conversion in C

August 16, 2026

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...

✅ Octal to Decimal Conversion in C

#include<stdio.h>

int main()
{
    int num;

    printf("Enter any octal number:\n");
    scanf("%o",&num);

    printf("The Decimal value is:%d\n",num);

    return 0;
}

📘 Explanation:

This C program converts an octal number into its decimal equivalent using a format specifier.

The %o format specifier is used in scanf() to read an octal number.
The compiler automatically converts the octal input into decimal.
The result is printed using %d format specifier.
No manual conversion logic is required.

This is the simplest and most efficient way to convert octal to decimal in C.

🧾 Sample Output:

Enter any octal number:
17
The Decimal value is:15

🔑 Keywords:

octal to decimal in C, scanf format specifier, number system conversion, C programming basics, octal input C, decimal output

📌 Hashtags:

#CProgramming #OctalToDecimal #NumberSystem #CLanguage #CodingBasics #1printf

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