C Program to Convert Decimal to Octal

✅ C Program to Convert Decimal Number to Octal

#include <stdio.h>

int main() {
    int num, octal[32], i = 0;

    printf("Enter a decimal number: ");
    scanf("%d", &num);

    if (num == 0) {
        printf("Octal: 0\n");
        return 0;
    }

    while (num > 0) {
        octal[i] = num % 8;   // store remainder (0–7)
        num = num / 8;        // reduce number
        i++;
    }

    printf("Octal: ");
    for (int j = i - 1; j >= 0; j--) {  // print in reverse
        printf("%d", octal[j]);
    }
    printf("\n");

    return 0;
}
  

📘 Explanation:

This program converts a decimal number into its octal representation:

• We repeatedly divide the number by 8 and store the remainders (0–7).
• These remainders are stored in an array.
• Finally, we print the array in reverse order to get the correct octal format.
• If the number is 0, the output is directly 0.

🧾 Sample Output:

Enter a decimal number: 10
Octal: 12

Enter a decimal number: 25
Octal: 31
  

🔑 Keywords:

C program decimal to octal, decimal to octal conversion, division by 8 method in C, octal number C program, beginner C examples

📌 Hashtags:

#CProgramming #OctalConversion #DecimalToOctal #CExamples #CodingForBeginners

🔍 Search Description:

This C program converts a decimal number into octal using division by 8 method. It stores remainders in an array and prints them in reverse order with example outputs.