## Is there a GCD function in C?

In this program, two integers entered by the user are stored in variable n1 and n2 . Then, for loop is iterated until i is less than n1 and n2 . In each iteration, if both n1 and n2 are exactly divisible by i , the value of i is assigned to gcd .

How do you find HCF without recursion?

Suppose two numbers are present as 16 and 24. The GCD of these two is 8. Here the approach is simple. If the greater number of these two is divisible by the smaller one, then that is the HCF, otherwise starting from (smaller / 2) to 1, if the current element divides both the number, then that is the HCF.

### Is GCD a recursive function?

In the above program, gcd() is a recursive function. It has two parameters i.e. a and b. If b is greater than 0, then a is returned to the main() function. Otherwise, the gcd() function recursively calls itself with the values b and a%b.

How do you calculate GCD iterative method?

HCF (Highest Common Factor) or GCD (Greatest Common Divisor) of two numbers is the largest number that divides both of them. For example, GCD of 20 and 28 is 4, and GCD of 98 and 56 is 14.

## Is GCD same as HCF?

The greatest common divisor (GCD) of two or more numbers is the greatest common factor number that divides them, exactly. It is also called the highest common factor (HCF). For example, the greatest common factor of 15 and 10 is 5, since both the numbers can be divided by 5.

Which type of recursion is used in GCD?

gcd() is a recursive function. It has two parameters i.e. a and b. If b is greater than 0, then a is returned to the main() function. Otherwise, the gcd() function recursively calls itself with the values b and a%b.

### Is GCF and GCD the same?

The GCD is sometimes called the greatest common factor (GCF). A very useful property of the GCD is that it can be represented as a sum of the given numbers with integer coefficients.

How does Euclidean algorithm solve GCD?

The Euclidean Algorithm for finding GCD(A,B) is as follows:

1. If A = 0 then GCD(A,B)=B, since the GCD(0,B)=B, and we can stop.
2. If B = 0 then GCD(A,B)=A, since the GCD(A,0)=A, and we can stop.
3. Write A in quotient remainder form (A = B⋅Q + R)
4. Find GCD(B,R) using the Euclidean Algorithm since GCD(A,B) = GCD(B,R)

## What is the formula for GCD?

As per the LCM method, we can obtain the GCD of any two positive integers by finding the product of both the numbers and the least common multiple of both numbers. LCM method to obtain the greatest common divisor is given as GCD (a, b) = (a × b)/ LCM (a, b).

Is LCM and GCD same?

The least common multiple (LCM) of two integers is the smallest positive integer that is a multiple of both. The greatest common divisor (GCD) of two integers is the largest positive integer dividing both. The product of the two numbers is the product of the LCM and the GCD.