Here is a little change of the second example to find the GCD for both positive and negative type of integers. The above two programs works as intended only if the user pass positive integers(value). This process is continued until “num1” and “num2” are equal. Please Enter two integer Values 75 255 GCD 15 C Program to find GCD of Two Numbers Using Functions. If both numbers are divisible by i, then it modifies the GCD and. In this method, smaller integer is subtracted from the larger integer, and the result is assigned to variable who is holding larger integer value. In the example below, for loop is used to iterate the variable i from 0 to the smaller number. This is a better way to find the greatest common divisor(GCD). Output Enter two positive integers value : 82 In the previous tutorial, we have learnt to write the c program to calculate GCD without recursion. Printf("Enter two positive integers value : ") In this tutorial, we will learn the writing program in C to find the GCD of two numbers using recursion. Hear we will show you 3 different way to find greatest common divisor (gcd).Įxample 1 :: GCD Using for loop and if Statement // include header file The HCF (highest common factor) or GCD (greatest common divisor) of two integers is the largest integer that can exactly divide both numbers (without a remainder). Examples on different ways to calculate greatest common divisor (gcd) of two integers (vlaue of both positive and negative integers ) using loops and decision making statements in C programing.
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