C++ Help needed PLEASE

[unckiejohn]

I need a quick bit of help with some C++ ( beginner )

I am taking an entry level C++ class and we are at the point where we are learning how to use if else statments

We are using Microsoft Visual C++ Basic

The program runs but does not perform the math ?????


And the assignment is as follows:

<b><big> Program Development</big></b>

A program is required to convert a temperature that is expressed in one unit, into a temperature of another unit.
The units the program must be designed to accept are:

• K - Kelvin
• C - Celsius
• R - Rankine
• F - Fahrenheit

A typical screen display is shown below:

<big>This program will convert a temperature in units
of Celsius (C), Kelvin (K), Fahrenheit (F) or
Rankine (R), to a temperature in any of these units.

Input Temperature: 37
Units to convert from (C, K, F, R): c

Units to convert to (C, K, F, R): f


A temperature of 37 °C is equivalent to 98.6 °F.

Press any key to continue</big>

You should be able to input the units in either upper or lower case.





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this is as far as I have gotten

************************



// john
// EN17
// temperture conversion homework


# include <iostream.h>


int main ()

{

// Decalre variables


double Temp_in , Temp_out ,TEMP_K;
char UNITS_in , UNITS_out,C,F,R,K;


// Prompt for Values


cout<< "This program will convert any temperature, from one unit to another";
cout<< "\n\nEnter the value of the temperature: ";
cin >> Temp_in;
cout<< "\n\nEnter the current units of the temperature\nfor Celcius, enter C:\nfor Farenheit, enter F:";
cout<< "\nfor Rankine, enter R\nfor Kelvine, enter K\n: ";
cin >> UNITS_in;
cout<< "\n\nEnter the units of temperature you want to convert to:\nfor Celcius, enter C:\nfor Farenheit, enter F:";
cout<< "\nfor Rankine, enter R:\nfor Kelvine, enter K:\n ";
cin >> UNITS_out;




// Temp K Calculations


if ( UNITS_in == C)
{
TEMP_K = Temp_in + 273.15; //UNITS_in = Celcius
}

else if ( UNITS_in == F)
{
TEMP_K = (Temp_in +459.67)*(5/9); //UNITS_in = Farenheit
}

else if ( UNITS_in == R)
{
TEMP_K = Temp_in *(5/9); //UNITS_in = Rankine
}
else if( UNITS_in == K )
{

TEMP_K = Temp_in ; //UNITS_in = Kelvine
}



// Temp out calulations



if ( UNITS_out == C)

{

Temp_out = TEMP_K - 273.15; //UNITS_out = Celcius

}

else if ( UNITS_out == F)

{

Temp_out = TEMP_K *(9/5)-459.67; //UNITS_out = Farenheit

}

else if ( UNITS_in == R)

{

Temp_out = TEMP_K *(5/9); //UNITS_out = Rankine

}

else (UNITS_in == K);
{

Temp_out = TEMP_K ; //UNITS_out = Kelvine

}




// Output Results



cout << "\nYour temperature of" << Temp_in <<" degrees" << UNITS_in << "when converted ";
cout << "\nresults in " << Temp_out << " degrees " << UNITS_out<<" \n ";


return 0;

}</iostream.h>

[AhelpingHand]

The whole logic needs a re_thinking I think, to convert from Any unit to any unit, you need something like "A middle unit" So take the input, convert it to this Middle Unit, take the output and then convert this Middle unit to the output. Good Luck