Notes

COMPUTER PROGRAMS
No.1
import java.util.Scanner;
//to input 2 integers and if either is 0 to exit or to divide larger by smaller number.
class pg165_13
{
public static void main ()
{
Scanner sc = new Scanner (System.in);
int x,y,q ;
System.out.println ("Enter any 2 integers : ");
x = sc.nextInt();
y = sc.nextInt();
if (x==0 || y==0)
{
System.out.println ("Invalid entry");
}
else if (x>=y)
{
q = x/y;
System.out.println ("The quotient of "+x+ "/" +y+ " is "+q);
}
else if (y>=x)
{
q = y/x;
System.out.println ("The quotient of "+y+ "/" +x+ " is "+q);
}
}
}
star 1

No.2
//to input three integers and check whether all the three integers are different from each other or not
import java.util.Scanner;
class prg_12
{
static void main()
{
Scanner sc = new Scanner(System.in);
System.out.println("Enter three integers");
int num1 = sc.nextInt();
int num2 = sc.nextInt();
int num3 = sc.nextInt();
if (num1==num2&&num1==num3&&num2==num3)
{
System.out.println("All the three numbers are the same");
}
else
{
System.out.println("All the three numbers are unique(different)");
}
}
}
star 1

No.3
//to input an integer and check whether the number is a 2digit or a 3digit number
import java.util.Scanner;
class prg_10
{
static void main()
{
Scanner sc = new Scanner(System.in);
System.out.println("Enter an integer");
int num = sc.nextInt();
if(num>9&&num<100)
{
System.out.println("The number is a two digit number");
}
else if(num>99&&num<1000)
{
System.out.println("The number is a three digit number");
}
else
{
System.out.println("The number is not a 3 digit number or a three digit number");
}
}
}

No.4
import java.util.Scanner;
//to check whether a three digit number is divisible by 3 or not
class pg165_9
{
public static void main ()
{
Scanner sc = new Scanner (System.in);
int x;
System.out.println ("Enter an integer value : ");
x = sc.nextInt();
if (x>=100 && x<=999 || x<=-100 && x>=-999)
{
System.out.println (x+" is a 3-digit number");
if (x%3==0)
System.out.println (x+" is divisible by 3");
else
System.out.println (x+" is not divisible by 3");
}
else
{
System.out.println (x+" is not a 3-digit number");
}
}
}

No.5
//to check whether an integer is a two digit number or not
import java.util.Scanner;
class prg_8
{
static void main()
{
Scanner sc = new Scanner(System.in);
System.out.println("Enter an integer");
int num = sc.nextInt();
if(num>=10 && num<=99 || num>=-99 && num<=-10)
{
System.out.println("It is a 2-digit number");
}
else
{
System.out.println("Not a 2-digit number");
}
}