[RESOLVED] I need help with writing a program in C++ (I'm still a newbie)

[2kaud]

Thanks for all the replies! It really helped me. But last thing and I won't bother you anymore, may somebody please tell me what to do in the main() function, because I really have no idea.

For the posted code

Triangle t1;
face();

[2kaud]

As I'm feeling in a good mood and you're tried first, consider

#include <iostream>
#include <cmath>
using namespace std;

class Triangle
{
public:
	Triangle(int aa, int bb, int cc) : a(aa), b(bb), c(cc) {}

	double face()
	{
		double p = (a + b + c) / 2.0;
		return sqrt(p*(p - a)*(p - b)*(p - c));
	}

	bool isTriangle()
	{
		return (a + b > c && a + c > b && b + c > a);
	}

private:
	int a, b, c;
};

int main()
{
	int a, b, c;
	cout << "Enter the 3 sides of the triangle as integers: ";
	cin >> a >> b >> c;

	Triangle t1(a, b, c);

	if (t1.isTriangle()) {
		cout << "Is a triangle" << endl;
		cout << "The face is " << t1.face() << endl;
	} else
		cout << "Is not a triangle" << endl;

	return 0;
}

Happy coding

[lebro98]

Thank you so much!!! I really am exhausted. I have to do this and 2 websites due tomorrow and have been dealing with this for 2-3 hours (I wasn't even close to what you wrote)

[2kaud]

Thank you so much!!! I really am exhausted. I have to do this and 2 websites due tomorrow and have been dealing with this for 2-3 hours (I wasn't even close to what you wrote)

You're welcome. Make sure you learn from this - so next time you can just write the code straight away.