Basic Triangle Math [c++]

[Disharmony]

I'm just starting to get used to object oriented programming. So I figured one of the easiest ways to practice would be to make a program to find the perimeter and/or area of a triangle.

I was going to add a "do...while loop" to exit, as well as a menu for whether or not you wanted to find the area or perimeter, but I figured that would be a waste of time, because the point was for me to learn about Objects, not deal with loops.

/* Basic Triangle functions code by Disharmony */ 
// DisHarm0ny[at]yahoo.com

#include <cstdlib>
#include <iostream>

//defining the class "triangle"
class triangle
{
      public:
             int getSide1();
             int getSide2();
             int getSide3();
             float getBase();
             float getHeight();
             void setVars();
              
             
             
      private:
             float height;
             int base;
             int side1;
             int side2;
             int side3;
             float area_value;
             int perimeter_value;
};

void triangle::setVars()
{
    std::cout << "What is the value of side1? \n";
    std::cin >> side1;
    std::cout << "What is the value of side2? \n";
    std::cin >> side2;
    std::cout << "What is the value of side3? \n";
    std::cin >> side3;
    std::cout << "What is the value of base? \n";
    std::cin >> base;
    std::cout << "What is the height of the triangle? \n";
    std::cin >> height;
    
}



int triangle::getSide1()
{
    return side1;
}

int triangle::getSide2()
{
    return side2;
}

int triangle::getSide3()
{
    return side3;
}

float triangle::getBase()
{
    return base;
}

float triangle::getHeight()
{
    return height;
}
// Done defining the "triangle" class






float area(float,float);
int perimeter(int ,int ,int );
triangle tri;
using std::cout;
using std::cin;
   

int main()
{
    
   tri.setVars(); //prompt for variables
   
   int side1=tri.getSide1(); //getting the private member variables from public methods
   int side2=tri.getSide2();
   int side3= tri.getSide3();
   float base = tri.getBase();
   float height = tri.getHeight();
   

   int perimeter_value = perimeter(side1, side2, side3);// calculate perimeter and area
   float area_value = area(height, base);
   
   
   cout << "The triangle's perimeter is: " << perimeter_value <<"\n";
   cout << "The triangle's area is: " << area_value << "\n";
   cout << "------------------------------------\n";
   
    
    
    
    system("PAUSE");
    return EXIT_SUCCESS;
}

float area(float height,float base)
{
    float result = height*base;
    float area_value = result / 2;
    return area_value;
}

int perimeter(int one,int two, int three)
{
    int perimeter_value;
    perimeter_value = one + two + three;
    
    return perimeter_value;
}

[WingedPanther]

I would only have the user enter the three sides. The software can then calculate the three corresponding heights and the three angles from that information.