In this post, we will learn how to convert octal to binary using C Programming language.
This program will take an octal number as input from the user and convert it into a binary number using a user-defined function.
So, without further ado, let’s begin this tutorial.
C Program To Convert Octal To Binary
// C Program To Convert Octal To Binary
#include <stdio.h>
#include <math.h>
long octalToBinary(int num){
int decimal = 0, i = 0;
long binary = 0;
while (num != 0){
decimal = decimal + (num % 10) * pow(8, i);
i++;
num = num / 10;
}
i = 1;
while (decimal != 0){
binary = binary + (decimal % 2) * i;
decimal = decimal / 2;
i = i * 10;
}
return binary;
}
int main(){
int num;
// Asking for Input
printf("Enter an octal number: ");
scanf("%d", &num);
printf("Equivalent Binary number is: %ld", octalToBinary(num));
return 0;
}
Output
Enter an octal number: 25
Equivalent Binary number is: 10101
How Does This Program Work ?
int num;
In this program, we have declared an int data type variable named as num.
// Asking for Input
printf("Enter an octal number: ");
scanf("%d", &num);
Then, the user is asked to enter an octal number. The value of this octal number will get stored in the num named variable.
printf("Equivalent Binary number is: %ld", octalToBinary(num));
Now, we call our custom defined function named octalToBinary which converts octal numbers into binary numbers.
long octalToBinary(int num){
int decimal = 0, i = 0;
long binary = 0;
while (num != 0){
decimal = decimal + (num % 10) * pow(8, i);
i++;
num = num / 10;
}
i = 1;
while (decimal != 0){
binary = binary + (decimal % 2) * i;
decimal = decimal / 2;
i = i * 10;
}
return binary;
}
This function will first convert the octal number into a decimal number, and then convert the decimal number into a binary number.
Conclusion
I hope after going through this post, you understand how to convert octal to binary using C Programming language.
If you have any doubt regarding the program, feel free to contact us in the comment section. We will be delighted to help you.
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