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variable problem?

serrld113 (35)
I have a problem with the second and third else if statements. It seems that they're using double air =(feet/1100) which is in the if statement instead of double water = (feet/4900) or double steel= (feet/16400). I'm not sure what the problem is really. I don't get an error. My testing number for feet 3500 and i get the same 3.18182 for the if statement and the else if statements.

help?

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 #include <iostream>
#include <iomanip>

using namespace std;

// no global variables

int main()
{

	char medium;
	double feet;
	
	cout << "Welcome to Sound Wave Calculator!\n\n";
	cout << "Select the medium the sound wave will travel through\n";
	cout << "A     Air\nW     Water\nS     Steel\n\n> ";

	cin >> medium;

	/* A = air
	W = water
	S = steel */

	
	if (medium == 'A'||'a')
	{
		cout << "How far will the sound wave travel (in feet)? ";
		cin >> feet;
		
		if (feet > 0)
		{
			double air = (feet / 1100);

			cout << "The sound wave will travel " << air << " seconds\n\n";
			cout << "Goodbye!\n";
		}
		else
			cout << "Distance cannot be negative. Aborting program.\nGoodbye!\n";
	}

	else if (medium == 'W'||'w')
	{
		cout << "How far will the sound wave travel (in feet)? ";
		cin >> feet;
		
		if (feet > 0)
		{
			double water = (feet / 4900);

			cout << "The sound wave will travel "<< water << " seconds\n\n";
			cout << "Goodbye!\n";
		}
		else
			cout << "Distance cannot be negative. Aborting program.\nGoodbye!\n";
	}

	else if (medium == 'S'||'s')
	{
		cout << "How far will the sound wave travel (in feet)? ";
		cin >> feet;
		
		if (feet > 0)
		{
			double steel = (feet / 16400);

			cout << "The sound wave will travel " << steel << " seconds\n\n";
			cout << "Goodbye!\n";
		}

		else
			cout << "Distance cannot be negative. Aborting program.\nGoodbye!\n";
	}

	else
		cout << "Illegal entry. Aborting program.\nGoodbye!\n";


	return 0;
}
GaiusBaltar (68)
(medium == 'A' || medium == 'a')

The way you wrote it, you were testing:

Is medium equal to 'A' ?
and
Is 'a' True/greater than 0 ?
Last edited on
serrld113 (35)
Thank you so much Gaius that fixed it!

oh ok thanks for explaining too that helps me even more
Last edited on
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