Pythagorean Programming

[mikeprogram]

Hello, Everyone

Tonight, I was writing a pythagorean program which ask for the two sides and gives the hypothenuse of three different triangles. Here is the program:

#include<iostream>
using namespace std;

#include<iomanip>
using std::setw;
using std::setprecision;
using std::setiosflags;

#include<cmath>

double hypotenuse(double, double);

int main()
{
     double side1, side2, theHypotenuse;
     int first = 1;

     cout << "Enter the lengths of the two sides: ";

     for( int i = 1; i <= 3; i++)
     {
     cin  >> side1 >> side2;

    if( first )
       {
        cout << setw( 5 ) << "Triangle" << setw( 12 ) << "Side 1"
             << setw( 14 ) << "Side 2" << setw( 20 ) << "Hypotenuse"
             << "\n";
        first = 0; // prevents this from printing again
       }
    cout << setiosflags( ios::fixed | ios::showpoint ) << setw( 3 )
         << i << setw( 15 ) << setprecision( 1 ) << side1 << setw( 15 )
         << setprecision( 1 ) << side2 << setw( 15 ) << setprecision ( 1 )
         << hypotenuse << "\n";
     }
     theHypotenuse = hypotenuse(side1, side2); // The function call
     
     return 0;
}

double hypotenuse(double side1, double side2)
{
     double hypot, A;
     A = side1 * side1 + side2 * side2;
     hypot = sqrt( A );
        
     return(hypot);
}

The program compiles, however, I get the following result:

<pegasus> g++ hypotenuse.cpp
<pegasus> a.out
Enter the lengths of the two sides: 3.0 4.0 5.0 12.0 8.0 15.0
Triangle      Side 1        Side 2          Hypotenuse
  1            3.0            4.0              1
  2            5.0           12.0              1
  3            8.0           15.0              1
<pegasus>

Unfortunately, the answers for the hypotenuse I get are 1.
How can I input into the program to give me the real answer for the hypotenuse as the following:

Triangle      Side 1        Side 2          Hypotenuse
  1            3.0            4.0             5.0
  2            5.0           12.0            13.0
  3            8.0           15.0            17.0

Please someone help me to figure out how to put the real answer as part of the hypotenuse table.

Thank you in advance for all your help.!

[SlyMaelstrom]

You were for some reason using the name of the function as output and calling it afterward. That doesn't work. I should also mention that you don't need to define std::setw or any iomanip functions.

It should be like this:

#include<iostream>
#include<iomanip>
#include<cmath>

using namespace std;

double hypotenuse(double, double);

int main()
{
     double side1, side2;
     int first = 1;

     cout << "Enter the lengths of the two sides: ";

     for( int i = 1; i <= 3; i++)
     {
     cin  >> side1 >> side2;

    if( first )
       {
        cout << setw( 5 ) << "Triangle" << setw( 12 ) << "Side 1"
             << setw( 14 ) << "Side 2" << setw( 20 ) << "Hypotenuse"
             << "\n";
        first = 0; // prevents this from printing again
       }
    cout << setiosflags( ios::fixed | ios::showpoint ) << setw( 3 )
         << i << setw( 15 ) << setprecision( 1 ) << side1 << setw( 15 )
         << setprecision( 1 ) << side2 << setw( 15 ) << setprecision ( 1 )
         << hypotenuse(side1, side2) << "\n";
     }
     
     return 0;
}

double hypotenuse(double side1, double side2)
{
     double hypot, A;
     A = side1 * side1 + side2 * side2;
     hypot = sqrt( A );
        
     return(hypot);
}

Output:

Enter the lengths of the two sides: 3.0 4.0 5.0 12.0
Triangle      Side 1        Side 2          Hypotenuse
  1            3.0            4.0            5.0
  2            5.0           12.0           13.0

[mikeprogram]

SlyMaelstrom:

I got your message. Once again, I could solve the problem with inputting hypotenuse answer as a table. Thank you for your tips.
I did not know you don't need to define std::setw or any iomanip functions in these types of program.

Sincerely, thank you for your help and your precious time. !

[Thantos]

when doing
"using namespace std;" there is no need for
"using std::<blah>" since its already taken care of