In this post, we will learn how to convert octal to decimal using C Programming language.
We will take an octal number as an input and convert it into a decimal number using a user-defined function.
So, without further ado, let’s begin this tutorial.
C Program To Convert Octal To Decimal
// C Program To Convert Octal To Decimal
#include <stdio.h>
#include <math.h>
long octaltodecimal(int num){
int temp = 0, decimal = 0;
while (num != 0){
decimal = decimal + (num % 10) * pow(8, temp);
temp++;
num = num / 10;
}
return decimal;
}
int main(){
int num;
// Asking for Input
printf("Enter an octal number: ");
scanf("%d", &num);
printf("Equivalent decimal number after conversion is: %d", octaltodecimal(num));
return 0;
}
Output
Enter an octal number: 64
Equivalent decimal number after conversion is: 52
How Does This Program Work ?
long octaltodecimal(int num){
int temp = 0, decimal = 0;
while (num != 0){
decimal = decimal + (num % 10) * pow(8, temp);
temp++;
num = num / 10;
}
return decimal;
}
In this program, we have defined a custom function named octaltodecimal which will convert the octal number into a decimal number.
printf("Equivalent decimal number after conversion is: %d", octaltodecimal(num));
We call this custom function in the main() function which will ultimately print the value obtained after conversion.
Conclusion
I hope after going through this post, you understand how to convert octal to decimal number 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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