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 09-28-2012, 07:24 AM PM User | #1 sabi New Coder   Join Date: Oct 2011 Posts: 27 Thanks: 2 Thanked 0 Times in 0 Posts How to make this work with if/else NOTE: in mathematics, the square root of a negative number is not real; in C++ therefore, passing such a value to the square root function is an error. Given a double variable named areaOfSquare write the necessary code to read in a value, the area of some square, into areaOfSquare and print out the length of the side of that square. HOWEVER: if any value read in is not valid input, just print the message "INVALID".
 09-28-2012, 07:28 AM PM User | #2 sabi New Coder   Join Date: Oct 2011 Posts: 27 Thanks: 2 Thanked 0 Times in 0 Posts This is what I got but I dont think this is exactly what the problem is asking for cin >> areaOfSquare; if(areaOfSquare >= 0) { length = sqrt(areaOfSquare); cout << length; } else { cout << "INVALID"; }
09-28-2012, 07:34 PM   PM User | #3
alykins
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Join Date: Apr 2011
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Quote:
 This is what I got but I dont think this is exactly what the problem is asking for
because that is C++
you are close with that answer though

here is another example... Note that this is not Java... I am against giving the answer for seemingly project/homework questions.

Code:
```        private void Driver()
{
int AreaOfSquare;
double length;

try
{
length = Math.Sqrt(AreaOfSquare);
if (length > -1)
Console.WriteLine("The length is {0}.", length);
else
throw new Exception();
}

catch
{
Console.WriteLine("You entered an invalid number");
}
}```
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