WEEK-1

1)Write a java program that prints all real solutions to the quadratic equations ax 2 +bx+c=0 read a,b,c and
use the quadratic formula if the discriminant is b 2-4ac is negative display a message stating that there are
no real solutions.

AIM:-To print all real solutions of the quadratic equations and to display that there are no real solutions.

CODE:-

import java.util.*;

class Quad

public static void main(String args[])

int a,b,c,k;

double x,y,l;

Scanner sc=new Scanner(System.in);

System.out.println("enter a,b and c values");

a=sc.nextInt();

b=sc.nextInt();

c=sc.nextInt();

k=b*b-4*a*c;

if(k<0)

System.out.println("there is no real number"+k);

else

l=Math.sqrt(k);

x=(-b-l)/2*a;

y=(-b+l)/2*a;

1
System.out.println("it is a real number"+x+" "+y);

OUTPUT:-

2)The fibinacci sequence is defined by the following rulews are 1st sequence are 1 and 1 and subsequent
values are sum of 2 values are preceding values.

AIM:-To print the fibonacci sequence starting with 1 and 1.

CODE:-

import java.util.*;

class Fib

public static void main(String args[])

int x=1,y=1,z,n,i;

Scanner sc=new Scanner(System.in);

System.out.println("enter n value");

n=sc.nextInt();

System.out.println(x+" "+y);

2
for(i=2;i<n;i++)

z=x+y;

System.out.println(" "+z);

x=y;

y=z;

OUTPUT:-

3)Write a java program to print sum of two numbers using scanner class.

AIM:-To print sum of two numbers.

CODE:-

import java.util.*;

class Sum

public static void main(String args[])

3
int x,y,z;

Scanner sc=new Scanner(System.in);

System.out.println("enter x value");

x=sc.nextInt();

System.out.println("enter y value");

y=sc.nextInt();

z=x+y;

System.out.println("sum of two number is"+z);

OUTPUT:-

4)Write a java program to implement given number is even or odd using scanner class.

AIM:-To print the given number is even or odd.

CODE:-

import java.util.*;

class Evenodd

public static void main(String args[])

4
int n;

Scanner sc=new Scanner(System.in);

System.out.println("enter n value");

n=sc.nextInt();

if(n%2==0)

System.out.println("even number is"+n);

else

System.out.println("odd number is"+n);

OUTPUT:-