Javada kiritilgan ixtiyoriy sonning manfiy yoki musbatligini aniqlovchi dastur tuzing

3-topshiriq

1. 
   Javada kiritilgan ixtiyoriy sonning manfiy yoki musbatligini aniqlovchi dastur tuzing
   

public class Ziyo

{

public static void main(String[] args)

{

int son=100;

if(son > 0)

{

System.out.println(son+" musbat son");

}

else if(son < 0)

{

System.out.println(son+" manfiy son");

}

else

{

System.out.println(number+" musbat ham manfiy ham emas");

}

}

}

Chiqish:

100 son musbat son

2. 
   Javada kiritilgan ixtiyoriy sonning juft yoki toqligini aniqlovchi dastur tuzing
   

import java.util.tekshirish;
class CheckEvenOdd

{

public static void main(String args[])

{

int num;

System.out.println("butun son kiriting:");
tekshirish input = new tekshirish(System.in);

num = input.nextInt();

if ( num % 2 == 0 )

System.out.println("son juft");

else

System.out.println("son toq");

}

}
chiqish 1:

butun son kiriting:

78

son juft

3. 
   Javada kiritilgan sonning tub sonligini aniqlovchi dastur tuzing.
   

class Tub

{

public static void main (String[] args)

{

int i =0;

int num =0;

String tub = "";

for (i = 1; i <= 100; i++)

{

int sanagich=0;

for(num =i; num>=1; num--)

{

if(i%num==0)

{

sanagich = sanagich + 1;

}

}

if (sanagich ==2)

{

tub = tub + i + " ";

}

}

System.out.println("1 dan 100 gacha tup sonlar :");

System.out.println(tub);

}

}

chiqish:

1 dan 100 gacha tup sonlar :

2 3 5 7 11 13 17 19 23 29 31 37 41 43 47 53 59 61 67 71 73 79 83 89 97

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