gistfile1.txt

#include "stdafx.h"
#include <cmath>
#include <iostream>
 
using namespace std;
 
double a = 0, b = 0, c = 0, A = 0, B = 0, C = 0;
 
double angle(double a, double  b, double c);
double side(double Xa, double Xb, double Xc, double Ya, double Yb, double Yc);
 
int main()
{
    double Xa, Xb, Xc;
    double Ya, Yb, Yc;
    double deg = 57.324;
 
    cout << "Enter the value of X of point a: ";    cin >> Xa;
    cout << "Enter the value of Y of point a: ";    cin >> Ya;
 
    cout << "Enter the value of X of point b: ";    cin >> Xb;
    cout << "Enter the value of Y of point b: ";    cin >> Yb;
 
    cout << "Enter the value of X of point c: ";    cin >> Xc;
    cout << "Enter the value of Y of point c: ";    cin >> Yc;
 
    side(Xa, Xb, Xc, Ya, Yb, Yc);
    angle(a, b, c);
 
    if (((a + b) < c) && ((b + c) < a) && ((a + c) < b)) {
        cout << "\nThe side a is   " << a << ", the side b is   " << b << ", the side c is   " << c << endl;
 
        cout << "\nThe angle A is " << A << "RAD   "; cout << A*deg << "DEG" << endl;
        cout << "\nThe angle B is " << B << "RAD   "; cout << B*deg << "DEG" << endl;
        cout << "\nThe angle C is " << C << "RAD   "; cout << C*deg << "DEG" << endl;
    } else {
        cout << "\nPlease enter different values." << endl;
    }
 
    return 0;
}
 
 double angle(double a, double b, double c)
{
    double aa = (a*a + b*b - c*c) / (2 * b*c);
    double bb = (b*b + a*a - c*c) / (2 * a*c);
    double cc = (c*c + b*b - a*a) / (2 * a*b);
 
    A = acos(aa);
    B = acos(bb);
    C = acos(cc);
}
 
double side(double Xa, double Xb, double Xc, double Ya, double Yb, double Yc)
{
    a = sqrt(((Xc - Xb)*(Xc - Xb)) + ((Yc - Yb)*(Yc - Yb)));
    b = sqrt(((Xa - Xc)*(Xa - Xc)) + ((Ya - Yc)*(Ya - Yc)));
    c = sqrt(((Xb - Xa)*(Xb - Xa)) + ((Yb - Ya)*(Yb - Ya)));
}