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#include <fstream>
#include <iostream>
#include <iomanip>
#include <cmath>
#include <cstdlib>
using namespace std;
bool isTriangle (double num1, double num2, double num3)
{
double a, b, c;
a=num1+num2;
b=num2+num3;
c=num1+num3;
if (a > num3 && b > num1 && c > num2)
return true;
else
return false;
}
bool isRight(double sideA, double sideB, double sideC)
{
double AA, BB, CC, AB, AC, BC;
AA=sideA*sideA;
BB=sideB*sideB;
CC=sideB*sideB;
AB=AA+BB;
AC=AA+CC;
BC=BB+CC;
if (AB==CC||BC==AA||AC==BB)
return true;
else
return false;
}
bool isEquilateral (double sideA, double sideB, double sideC)
{
if (sideA==sideB&&sideB==sideC)
return true;
else
return false;
}
bool isIsosceles (double sideA, double sideB, double sideC)
{
if (sideA==sideB||sideA==sideC||sideB==sideC)
return true;
else
return false;
}
bool isScalene (double sideA, double sideB, double sideC)
{
if (sideA!=sideB&&sideA!=sideC&&sideB!=sideC)
return true;
else
return false;
}
void calcTriangle (double sideA, double sideB, double sideC, double& perimeter, double& area)
{
perimeter=sideA+sideB+sideC;
double S=perimeter/2;
double SA, SB, SC;
SA=S-sideA;
SB=S-sideB;
SC=S-sideC;
area=sqrt(S*SA*SB*SC);
}
int main()
{
fstream inFile;
string inFileName;
double num1, num2, num3;
cout<<"Enter the name of the data file> ";
cin>>inFileName;
cout<<endl;
inFile.open(inFileName.c_str(),ios::in);
if (inFile.fail())
{
cout<<"Unable to open "<<inFileName<<endl;
exit(1);
}
cout << setw(32) << right << "Triangle Program Report";
cout << endl;
cout << endl;
cout << "=======================================";
cout << endl;
cout << endl;
double N1, N2, N3;
while (inFile>>N1>>N2>>N3)
{
inFile>>N1>>N2>>N3;
if (isTriangle (num1, num2, num3))
{
cout << "The sides of the triangle are:";
cout << endl;
cout << endl;
cout << "A = ";
cout << setw(6) << setprecision(4) << fixed << num1;
cout << "; B = " << num2;
cout << "; C = " << num3;
cout << endl;
cout << endl;
cout << endl;
double perimeter, semiperimeter, area;
calcTriangle (num1, num2, num3, perimeter, area);
cout << "Perimeter = " << perimeter << endl;
cout << endl;
cout << "Area";
cout << setw(8) << setprecision(4) << right << " = " << area;
cout << endl;
cout << endl;
cout << endl;
cout << "Classification:";
cout << endl;
cout << endl;cout << setw(15) << left << "Right:";
if (isRight(num1, num2, num3))
cout<<"Y"<<endl;
else
cout<<"N"<<endl;
cout << setw(15) << left << "Isoscoles:";
if (isIsosceles(num1, num2, num3))
cout<<"Y"<<endl;
else
cout<<"N"<<endl;
cout << setw(15) << left << "Scalene:";
if (isScalene(num1, num2, num3))
cout<<"Y"<<endl;
else
cout<<"N"<<endl;
cout << setw(15) << left << "Equilateral:";
if (isEquilateral(num1, num2, num3))
cout<<"Y"<<endl;
else
cout<<"N"<<endl;
}
else
{
cout << "*** ";
cout << setprecision(4) << fixed << num1 << ", ";
cout << num2 << ", and " << num3;
cout << " cannot form the sides of a triangle ***";
cout << endl;
}
cout << "----------------------------------------";
cout << endl;
cout << endl;
cout << endl;
cout<<"*** END OF REPORT ***";
cout << endl;
cout << endl;
}
system("PAUSE");
return EXIT_SUCCESS;
}
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