In this source code example, we will write a code to convert the Octal to a decimal number in the C programming language.
Convert Octal to Decimal in C
In this C program, we will take input from the User or console and print the result to the output:
#include <math.h>
#include <stdio.h>
// Converts octal number to decimal
int convertValue(int num, int i) { return num * pow(8, i); }
long long toDecimal(int octal_value)
{
int decimal_value = 0, i = 0;
while (octal_value)
{
// Extracts right-most digit and then multiplies by 8^i
decimal_value += convertValue(octal_value % 10, i++);
// Shift right in base 10
octal_value /= 10;
}
return decimal_value;
}
int main()
{
printf("Enter octal value: ");
int octal_value;
scanf("%d", &octal_value);
long long result = toDecimal(octal_value);
printf("%d in decimal is %d\n", octal_value, result);
return 0;
}
Output:
Enter octal value: 12
12 in decimal is 10
Comments
Post a Comment