C Program To Find LCM GCD Of Two Numbers

C Program To Find LCM GCD Of Two Numbers. If you are looking for C program to calculate LCM and GCD of two numbers, here in this tutorial we will help you to learn how to write a program to find LCM in C language.

C Program to Find LCM and GCD

Learn how to write a C program to find LCM. Writing C Program to finding GCD of a number can be done using various techniques but here in this program, we show how to write a C program to find LCM GCD of two numbers in a proper way.

C Program to Find LCM and GCD of Two Numbers Source Code

/* C program to find the LCM and GCD of two numbers - LcmGcd.C */

 #include <stdio.h>

void main()
 {
//variable declaration
 int num1, num2, gcd, lcm, remainder, numerator, denominator;

//asking user to enter two numbers and reading them
printf("Enter two numbers\n");
 scanf("%d %d", &num1, &num2);

//checking for bigger number
 if (num1 > num2)
 {
 numerator = num1;
 denominator = num2;
 }
 else
 {
 numerator = num2;
 denominator = num1;
 }

//calculating remainder
 remainder = numerator % denominator;

//logic to find gcd and lcm of two numbers
 while (remainder != 0)
 {
 numerator = denominator;
 denominator = remainder;
 remainder = numerator % denominator;
 }

//finding lcm and gcd of two numbers
 gcd = denominator;
 lcm = num1 * num2 / gcd;

//printing lcm and gcd of two numbers
 printf("GCD of %d and %d = %d\n", num1, num2, gcd);
 printf("LCM of %d and %d = %d\n", num1, num2, lcm);
 }

C Program to Find LCM and GCD of Two Numbers Output

Enter two numbers

65

30

GCD of 65 and 30 = 5

LCM of 65 and 30 = 390

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