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C Program to Find GCD of given Numbers using Recursion

C Program to Find GCD of given Numbers using Recursion

This C program, using recursion, finds the GCD of the two numbers entered by the user. The user enters two numbers by using a space in between them or by pressing enter after each input.

    #include <stdio.h>

    int gcd(int, int);

    int main()

    {

        int x, y, result;

        printf("Enter the two numbers to find their GCD: ");

        scanf("%d%d", &x, &y);

        result = gcd(x, y);

        printf("The GCD of %d and %d is %d.\n", x, y, result);

    }

    int gcd(int x, int y)

    {

        while (x != y)

        {

            if (x > y)

            {

                return gcd(x - y, y);

            }

            else

            {

                return gcd(x, y - x);

            }

        }

        return x;

    }}

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