why do i get letters when multiplying numbers?

[jeffg64]

how do i make it so that i don't get letters when i multiply two numbers

  #include <iostream>
#include <cmath>
using namespace std;
int main()
{
	char binary[5];
	double decimal;
	int dec0, dec1, dec2, dec3;
	cout << "Enter a 4 digit binary number: ";
	cin.getline(binary, 5, '\n');
	binary[0] *= 1;
	binary[1] *= 2;
	cout << binary[0] << endl;
	cout << binary[1] << endl;
	cout << binary[2] << endl;
	cout << binary[3] << endl;
	cout << binary << endl;

	system("pause");
	return 0;
}

[LB]

On lines 13-16, just cast it to an integer: static_cast<int>(binary[0])

Remember that the char type is treated as text, not numbers, by C++ streams.

[jeffg64]

like so?

char binary[5];
	double decimal;
	int dec0, dec1, dec2, dec3;
	cout << "Enter a 4 digit binary number: ";
	cin.getline(binary, 5, '\n');
	binary[0] *= 1;
	binary[1] *= 2;
	cout << static_cast<int>(binary[0]) << endl;
	cout << static_cast<int>(binary[1]) << endl;
	cout << static_cast<int>(binary[2]) << endl;
	cout << static_cast<int>(binary[3]) << endl;
	cout << binary << endl;

	system("pause");
	return 0;

[48T7M4Gy]

Please don't post twice on same problem !! It's a time waster

[jeffg64]

it's two different questions though.

[48T7M4Gy]

No it's not and I've deleted my help. You miss out unfortunately

[jeffg64]

Not sure why you're being rude... But LB's solution worked. Thanks for your attempt to help though.

[48T7M4Gy]

I'm not being rude but since you want to argue, I'm just pointing out that double posting is a waste of people's time. We are volunteers and luckily see very few selfish and thoughtless shits like you but feel obliged to point it out politely when it occurs.

[LB]

@kemort: if you're going to claim that someone double posted, at least link to the other post. The only other post I could find was with similar code but an entirely different question.

BTW I didn't report your post but I can see why someone would.

[48T7M4Gy]

I couldn't care less if I have been reported. The claim he is making is wrong and I don't plan getting into an argument with you. I suggest you MYOB.

[LB]

kemort wrote:

I suggest you MYOB.

Use private messages if you are not comfortable with everyone seeing your business.

[48T7M4Gy]

Whatever that's supposed to mean. I guess we'll have to put it down to the actions of a callow nosey parker.