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Join Date: Nov 2009

Posts: 6

Reputation: GiRL,IT is an unknown quantity at this point

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GiRL,IT

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plllllzzz hellp me before next Suterday

-3

30 Days Ago

hi guyz and GiRlzz (F) ;;

how R u ?

plllz I need 4 helpping from u !!

I've a Q in Java ,, I'm trying to write it in jGRASP but I can't :s

plllllzzz hellp me before next Suterday ;s

this is my Q

3.Write expressions to compute both solutions for the quadratic formula. The formula is
- b + - ( b^2 - 4ac) / 2a
The - & + symbol means “plus or minus” and indicates that the equation has two solutions: one in which the result of the square root is added to -b and one in which the result is subtracted from -b. Assume all variables are float variables.

this is my answer but when put it in jGRASP , it tell me ERROR !!!

 Help with Code Tags 
 Java Syntax (Toggle Plain Text) 
import java.lang.Math; 
 
public class E3
{
public static void main(String[] args)
{
Scanner console = new Scanner (System.in);
 
float x,y,a,b,c,f;
double e;
 
System.out.println("Enter a ");
a =console.nextDouble();
 
System.out.println("Enter b ");
b = console.nextDouble();
 
System.out.println("Enter c ");
c = console.nextDouble();
 
f= (b*b)-(4*a*c);
e= Math.pow(f, 0.5 );
 
x=(-b + e)/(2*a);
y=(-b - e)/(2*a);
 
System.out.println("solution1 =" + x);
System.out.println("solution2 =" + y);
}
}
import java.lang.Math; 

public class E3
{
public static void main(String[] args)
{
Scanner console = new Scanner (System.in);

float x,y,a,b,c,f;
double e;

System.out.println("Enter a ");
a =console.nextDouble();

System.out.println("Enter b ");
b = console.nextDouble();

System.out.println("Enter c ");
c = console.nextDouble();

f= (b*b)-(4*a*c);
e= Math.pow(f, 0.5 );

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

System.out.println("solution1 =" + x);
System.out.println("solution2 =" + y);
}
}

and this is another Q

2.Write a java program that reads two integers into the variables a and b then swaps the values of a and b.

I'm so sorry :;s

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Join Date: Jul 2008

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Reputation: anuj576 is an unknown quantity at this point

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anuj576

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30 Days Ago

Can you please brief us on the error that you are getting.

Thanks & Regards,
Anuj Sharma
Future Software Engineer

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Join Date: Oct 2009

Posts: 17

Reputation: stevelg is an unknown quantity at this point

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stevelg

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30 Days Ago

I notice you are using the standard float numbers and the newer double format which may be the cause of your problems. If so, you may need to cast the double values input into FLOAT to asign them to the declared variables. Alternatively, you could use Double precision throughout the program.

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Join Date: Nov 2009

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Reputation: mruthyunjaya is an unknown quantity at this point

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mruthyunjaya mruthyunjaya is offline

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30 Days Ago

•

Originally Posted by GiRL,IT

2.Write a java program that reads two integers into the variables a and b then swaps the values of a and b.

 Help with Code Tags 
 java Syntax (Toggle Plain Text) 
 
public class swapInts
{
public static void main(String[] args)
{
Scanner console = new Scanner (System.in);
 
int a, b, tempInt;
 
System.out.println("Enter first Int: ");
a =console.nextInt();
 
System.out.println("Enter second Int: ");
b = console.nextInt();
 
tempInt = a; //copy a to temp
a = b; //copy b to a
b = tempInt; //copy temp to b
 
System.out.println("int 1=" + a);
System.out.println("int 2 =" + b);
}
}
public class swapInts
{
public static void main(String[] args)
{
Scanner console = new Scanner (System.in);

int a, b, tempInt;

System.out.println("Enter first Int: ");
a =console.nextInt();

System.out.println("Enter second Int: ");
b = console.nextInt();

tempInt = a; //copy a to temp
a = b; //copy b to a
b = tempInt; //copy temp to b

System.out.println("int 1=" + a);
System.out.println("int 2 =" + b);
}
}

hope this helps...

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Join Date: Nov 2009

Posts: 6

Reputation: GiRL,IT is an unknown quantity at this point

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GiRL,IT

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Newbie Poster

-2

28 Days Ago

anuj576 & stevelg

THX 4 u ,, I solved Q 3 and I knw where is my erorr ^^

mruthyunjaya

Thhhhhhhhhhhhhhhnk u

you've helped me thhhx huuuun (F)(F) u'r a heRo

I'v a Q

what's meaning of tempInt in

 Help with Code Tags 
 Java Syntax (Toggle Plain Text) 
int a, b, tempInt;
tempInt = a; //copy a to temp
b = tempInt; //copy temp to b
int a, b, tempInt;
tempInt = a; //copy a to temp
b = tempInt; //copy temp to b

Finelly ^^ R u sure from da code ?

thx again

Last edited by GiRL,IT; 28 Days Ago at 3:40 am.

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Join Date: Dec 2004

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Reputation: peter_budo has much to be proud of

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peter_budo peter_budo is offline

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Code tags enforcer

-1

28 Days Ago

@GiRL,IT your use of language is unacceptable. Please make sure you read forum rules where you will find something like

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Join Date: Nov 2009

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Reputation: GiRL,IT is an unknown quantity at this point

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GiRL,IT

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-1

28 Days Ago

^

okay dear .

I'll do That

Last edited by GiRL,IT; 28 Days Ago at 4:43 am.

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Join Date: Nov 2009

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Reputation: mruthyunjaya is an unknown quantity at this point

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mruthyunjaya mruthyunjaya is offline

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Newbie Poster

28 Days Ago

•

Originally Posted by GiRL,IT

mruthyunjaya

Thhhhhhhhhhhhhhhnk u

you've helped me thhhx huuuun (F)(F) u'r a heRo

I'v a Q

what's meaning of tempInt in
Help with Code Tags

Java Syntax (Toggle Plain Text)
int a, b, tempInt;
tempInt = a; //copy a to temp
b = tempInt; //copy temp to b
int a, b, tempInt; tempInt = a; //copy a to temp b = tempInt; //copy temp to b
Finelly ^^ R u sure from da code ?

thx again

tempInt is just a temporary Integer. we use that to store either a or b value in the process of swapping... hope i am clear..