#include <bits/stdc++.h>

using namespace std;

void gcm_lcm()
{
    int a, b, gcd, lcm, mul;

    cin >> a >> b; // 15 6

    mul = a*b;
    while (b%a != 0)
    {
        int tmp = b; // 6
        b = a; // 15
        a = tmp%a; // 6 % 15 = 6
    }

    gcd = a;

    printf("GCD: %d\n", gcd);

    lcm = mul / gcd;

    printf("LCM: %d\n", lcm);


    /** vag shess 0 hole vajok gcd
    jodi 0 na hoy tahole vag shess vajok and vajok hbe vajjo
    */


    /** lcm: emon ekta songka jeti ek e sathe a diye o nisshes e vibajjo
    and b diye o nisshes e vibajj and songkati sorbo nimnno songka ortat er cheye
    chuto r kunu songka nei jeti ek sathe a and b uboy diyei nisshese bivajjo

    6 15
    GCD: 3
    LCM: 30
    */
}

void greatest_of_four()
{
    int a,b,c,d;
    printf("Enter the Four Numbers :");
    scanf("%d %d %d %d",&a,&b,&c,&d);

    if(a>b)
    {
        if(a>c)
        {
            if(a>d)
            {
                printf("%d is big",a);
            }
            else
            {
                printf("%d is big",d);
            }
        }
    }
    else if(b>c)
    {
        if(b>d)
        {
            printf("%d is big",b);
        }
        else
        {
            printf("%d is big",d);
        }
    }
    else if(c>d)
    {
        printf("%d is big",c);
    }
    else
    {
        printf("%d is big",d);
    }
}

void goto_statement()
{
    int i=10;

A:
    if(i<=100)
    {
        printf("%d ", i);
        i+=10;
        goto A;
    }
}

int main()
{

    /**int sum = 0;
    for(int i=1; i<=5; i++) {
        sum = sum+i*i; /// 0 1 2 3 4
    }
    printf("%d\n", sum); */

    int i=2;

    do
    {
        printf("Hello\n");

        i++;
    }
    while(i<=5);

    return 0;
}