C++ Help. Using void functions in Classes?

Question

using namespace std;


#include
#include
#include
#include "/user/cse232/Projects/project06.triangle.h"
#define PI 3.14159265

/*-----------------------------------------------------------------------------
Name: validate (private function member)

Purpose: Validate the contents of the sides. A triangle is only valid if
if the sum of 2 smallest sides is greater than the largest side alone and if
all the lengths of the sides are greater than zero.
-----------------------------------------------------------------------------*/

void Triangle::validate()
{ // triangle becomes valid if all sides are not = 0 and the sums of 2 sides is never less than the other
Valid = ((SideA!=0 && SideB!=0 &&SideC!=0)&&(SideA+SideB>SideC && SideA+SideC>SideB && SideC+SideB>SideA));
}


/*-----------------------------------------------------------------------------
Name: default constructor for type "Triangle"

Purpose: Initialize the contents of a Triangle
Receive: The lengths of the three sides of a Triangle
-----------------------------------------------------------------------------*/

Triangle::Triangle( double SA, double SB, double SC )
{
SideA = SA; //assigns values to each argument
SideB = SB;
SideC = SC;

validate();
}

/*-----------------------------------------------------------------------------
Name: copy constructor for class "Triangle

Purpose: Initalize the values of each side
Receive: the sides which is to be copied
-----------------------------------------------------------------------------*/

Triangle::Triangle (const Triangle& T)
{
SideA = T.SideA; // assigns each value to each argument that is gong to be copied
SideB = T.SideB;
SideC = T.SideC;

validate();
}


/*-----------------------------------------------------------------------------
Name: assignment operator for class "Triangle

Purpose: Copy the contents of the sides into another
Receive: the sides which is to be copied
Return: The sides on the righthand side for chaining.
-----------------------------------------------------------------------------*/

Triangle& Triangle::operator=(const Triangle& T)
{
SideA = T.SideA; // copy of each side's lengths
SideB = T.SideB;
SideC = T.SideC;

validate();

return *this; // return everything in the function
}


/*-----------------------------------------------------------------------------
Name: is_valid

Purpose: Test a Triangle object to see if it's valid
Receive: The Boolean value "true" is the object is valid
-----------------------------------------------------------------------------*/

bool Triangle::is_valid() const
{
return Valid; // returns true if the triangle is valid

}


/*-----------------------------------------------------------------------------
Name: sides

Purpose: Return the lenghth of each sides
Receive: The length of each side
Return: The value of each side's length
-----------------------------------------------------------------------------*/

void Triangle::sides(double& SA, double& SB, double& SC) const //0,inf,nan
{
SA = SideA;
SB = SideB;
SC = SideC;

cout<<"side"<}


/*-----------------------------------------------------------------------------
Name: angles

Purpose: Return the angles of each sides
Receive: The length of each side
Return: The value of the angles between each side
-----------------------------------------------------------------------------*/

void Triangle::angles(double& SA, double& SB, double& SC) const
{
double AA,AB,AC;

AA = acos((pow(SB,2)+pow(SC,2)-pow(SA,2))/(2*SB*SC))*180/PI;
AB = acos((pow(SA,2)+pow(SC,2)-pow(SB,2))/(2*SA*SC))*180/PI;
AC = acos((pow(SA,2)+pow(SB,2)-pow(SC,2))/(2*SA*SB))*180/PI;

cout<}


/*-----------------------------------------------------------------------------
Name: perimeter

Purpose: Return the perimeter of a Triangle
Return: The perimeter value
-----------------------------------------------------------------------------*/

double Triangle::perimeter() const
{
double A = SideA,
B = SideB,
C = SideC,
Perimeter;
Perimeter = A + B + C; // equation for perimeter
return Perimeter;
}



Cant show all my code. but how can I get the void functions(angles and sides) to successfully execute a "cout". Im knew with c++, and classes are still a bit confusing. If someone could help me out and explain to me how to do it, id appreciate it.

Answer 1

Add the following line under your includes:

using namespace std;

or

replace i.e. cout << AA << AB << AC << endl; by

std::cout << AA << " " << AB << " " AC << std:endl;

I added " " as terminator among the numbers ... :O)

I hope that helps.

Answer 2

So, what's the problem? Is your code not compiling? Or is it not producing the expected output? The problem I see is that you've got your numbers jammed up against eachother with no space in between.



    cout << AA << " " << AB << " " << AC << endl;



Does that fix your problem? Or is there something else?

Answer 3

if the problem was std::cout, it should have generated a compiler error. Did you get a compiler error or did you compile successfully and there is no output?