LCM of two numbers

LCM of two numbers

Find LCM of two numbers

LCM (Least Common Multiple) of two numbers is the smallest number which can be divided by both numbers.

This LCM C program allows the user to enter two positive integer values and we are going to calculate the LCM of those two values using the While Loop and if.

#include <stdio.h>
void main() {
    int num1, num2, min;
printf("\n\t\t\t...Welcome To EduNews.Tech... ");

    printf("\n\nEnter two positive integers : ");
    scanf("%d %d", &num1, &num2);

    // maximum number between n1 and n2 is stored in min
    min = (num1 > num2) ? num1 : num2;

    while (1) {
        if (min % num1 == 0 && min % n2 == 0) {
            printf("\nThe LCM of %d and %d is %d.", num1, num2, min);
printf("\n\n\n\t\t\tThankyou for Joining Us !");
    printf("\n\t\t\t!Regards EduNews !");


Program Output:



-In this program, the integers entered by the user are stored in variable num1 and num2 respectively.

-The largest number among num1 and num2 is stored in min. The LCM of two numbers cannot be less than min.

-The test expression of a while loop is always true.

-In each iteration, whether min is perfectly divisible by num1 and num2 is checked.

-If this test condition is not true, min is incremented by 1 and the iteration continues until the test expression of the if statement is true.

-The LCM of two numbers can also be found using the formula:

LCM = (num1*num2)/GCD

I hope this post helps you to understand the “LCM Program” and its implementation in C programming language.

Keep coding 🙂

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