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Nov 4th, 2009

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plllllzzz hellp me before next Suterday

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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 !!!

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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GiRL,IT

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Nov 4th, 2009

Re: plllllzzz hellp me before next Suterday

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

anuj576

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Nov 4th, 2009

Re: plllllzzz hellp me before next Suterday

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.

stevelg

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Nov 4th, 2009

Re: plllllzzz hellp me before next Suterday

Click to Expand / Collapse Quote 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.

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...

mruthyunjaya

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Nov 6th, 2009

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Re: plllllzzz hellp me before next Suterday

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

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; Nov 6th, 2009 at 3:40 am.

GiRL,IT

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Nov 6th, 2009

Re: plllllzzz hellp me before next Suterday

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

Quote ...

We strongly encourage all posts to be in full-sentence English. Please do not use "leet" speak or "chatroom" speak.

peter_budo

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Code tags enforcer

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Nov 6th, 2009

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Re: plllllzzz hellp me before next Suterday

^

okay dear .

I'll do That

Last edited by GiRL,IT; Nov 6th, 2009 at 4:43 am.

GiRL,IT

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Re: plllllzzz hellp me before next Suterday

Click to Expand / Collapse Quote 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
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..

mruthyunjaya

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Nov 6th, 2009

Re: plllllzzz hellp me before next Suterday

^

thank you

yes ,you could clear for me

GiRL,IT

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