C Program to Convert Decimal Number to Octal

In this program, you'll learn to convert Ocatl number to Decimal number system. Decimal to binary in C: We can convert any decimal number (base-10 (0 to 9)) into binary number(base-2 (0 or 1)) by c program. Decimal number is a base 10 number, there are total 10 digits between 0 to 9. Any combination of digits is decimal number such as 23, 445, 132, 0, 2 etc. Octal number is a base 8 number contains only 8 digits either 0 through 7. Any combination of digits is octal number such as 116, 33, 133, etc.

Source Code

#include <stdio.h>

int main()
{
    int dec, i, rem, c=1;
    int oct = 0;
    printf("Enter the Decimal number: ");
    scanf("%d", &dec);

    while(dec > 0)
    {
        rem = dec % 8;
        oct = oct + rem * c;
        dec = dec / 8; 
        c = c * 10;
    }
    printf("Octal Equivalent is: %ld", oct);
    return 0;
}