30 lines
699 B
C++
30 lines
699 B
C++
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#include <cmath>
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#include <iostream>
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using namespace std;
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class Triangle {
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public:
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class WrongTriangleSideException {};
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double a, b, c;
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Triangle(double an, double bn, double cn) : a(an), b(bn), c(cn) {
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if (!exst_tr()) throw WrongTriangleSideException();
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}
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bool exst_tr();
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void show();
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double perimetr();
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double square();
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};
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bool Triangle::exst_tr() { return perimetr() - max(max(a, b), c) * 2 > 0; }
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void Triangle::show() { cout << "A = " << a << ", B = " << b << ", C = " << c << endl; }
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double Triangle::perimetr() { return a + b + c; }
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double Triangle::square() {
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double p = perimetr() / 2;
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return sqrt(p * (p - a) * (p - b) * (p - c));
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}
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