need help C++

[ryuchi311]

hi..!! aim a beginner....
i don't know what i gonna really to do to make code...
can you help me just a simple basic C++ code

here the Q:

Write a program that reads in two integers and outputs the message telling
whether the products of the two numbers is "positive","negative" or "zero" without actually multiplying the numbers.

///simple code basic C++///

[Tassos Souris]

If only one of the operands is negative then the product is negative too.
If at least one of the operands is zero then the product is zero too.
Otherwise the product is positive...

Change the above algorithm a little and translate it to C++...

[boxfish]

Well, if you multiply two negative numbers, you get a positive number, right? Two positive numbers also make a positive. You probably know what happens when you multiply
A negative and a positive
A positive and a negative
Zero and a positive
Zero and zero
and so on.
But start simpler. Try making a program that takes a single number as input and tells you whether it's positive, negative, or zero. If you can do that, then you have already done most of what is needed for this program. We can't write the code for you; it's your assignment.
Hope this helps.

[ryuchi311]

ooh!!! dear.....
give only a little code!!!

[boxfish]

Start with a program that prompts the user for a number, stores it in a variable, and then prints out the number. Once you have that working, use a few if statements such as
if (number == 0)
to check whether the number is greater, less than, or equal to zero, and print "Positive", "Negative", or "Zero" accordingly.

[ryuchi311]

is this right?

 void main()
 {
 int x;
 printf ("Enter value");
 scanf("%d",&x);
 if(x<0)
 {
 printf ("Number Negative");
 }
 else
 {
 if(x>0)
 {
 printf ("Number Positive");
 }
 }
 else 
 printf ("Number Equal to Zero");
 return 0;
 }
 }

[boxfish]

I can tell you didn't try compiling it. It's close, but it has a couple of errors. first, you have to say int main, not void main. And you have the braces on the if statements messed up a bit. Indent your code! Just put some whitespace before any code in an if statement. It may seem unnecessary, because your program will work fine without it, but not using indentaion makes your code unreadable and leads to messed-up braces. The way you're doing the if statements,

if (something)
{
    doSomething;
}
else
{
    if (someOtherThing)
    {
        doSomeOtherThing;
    }
    else
    {
        doSomethingElse
    }
}
 

will work, but just use a simple if else-if else structure like this:

if (something)
{
    doSomething;
}
else if (someOtherThing)
{
    doSomeOtherThing;
}
else
{
    doSomethingElse
}
 

Much cleaner, with less nested if statements.
Hope this helps.

[curiously enough]

is this right?

 void main()
 {
 int x;
 printf ("Enter value");
 scanf("%d",&x);
 if(x<0)
 {
 printf ("Number Negative");
 }
 else
 {
 if(x>0)
 {
 printf ("Number Positive");
 }
 }
 else 
 printf ("Number Equal to Zero");
 return 0;
 }
 }

I thought you wanted the sign of the product of two integers? Here you're just finding the sign of one integer.
Here's the code you want:

Code removed per Posting Guidelines
 

[boxfish]

Here you're just finding the sign of one integer.

I suggested that (s)he do that first, and then work on two numbers. Wait a minute, are you spoonfeeding?

[sicarie]

curiously enough-

Please read your PM's, accessible through the PMs link under the Network tab at the top of the page.

Thanks,

sicarie