39 lines
782 B
C++
Executable File
39 lines
782 B
C++
Executable File
#include <cmath>
|
|
#include <iostream>
|
|
|
|
using namespace std;
|
|
|
|
class Triangle {
|
|
public:
|
|
double a, b, c;
|
|
|
|
bool exst_tr();
|
|
void set(double a1, double b1, double c1);
|
|
void show();
|
|
double perimetr();
|
|
double square();
|
|
};
|
|
|
|
bool Triangle::exst_tr() {
|
|
return Triangle::perimetr() - max(max(this->a, this->b), this->c) * 2 > 0;
|
|
}
|
|
|
|
void Triangle::set(double a1, double b1, double c1) {
|
|
this->a = a1;
|
|
this->b = b1;
|
|
this->c = c1;
|
|
}
|
|
|
|
void Triangle::show() {
|
|
cout << "A = " << this->a << ", B = " << this->b << ", C = " << this->c << endl;
|
|
}
|
|
|
|
double Triangle::perimetr() {
|
|
return this->a + this->b + this->c;
|
|
}
|
|
|
|
double Triangle::square() {
|
|
double p = Triangle::perimetr() / 2;
|
|
return sqrt(p * (p - this->a) * (p - this->b) * (p - this->c));
|
|
}
|