Function errors: Copying one function to create another.

[Teh]

I am having difficulties understanding this program may someone help me please.

Using the CelsiusToKelvin function as a guide, create a new function, changing the name to KelvinToCelsius, and modifying the function accordingly.

#include <iostream>
using namespace std;

double CelsiusToKelvin(double valueCelsius) {
   double valueKelvin = 0.0;

   valueKelvin = valueCelsius + 273.15;

   return valueKelvin;
}

/* Your solution goes here  */

/* ^ Your solution goes here ^ */

int main() {
   double valueC = 0.0;
   double valueK = 0.0;

   valueC = 10.0;
   cout << valueC << " C is " << CelsiusToKelvin(valueC) << " K" << endl;

   valueK = 283.15;
   cout << valueK << "  is " << KelvinToCelsius(valueK) << " C" << endl;

   return 0;
}

output: main.cpp: In function ‘int main()’:
main.cpp:24:55: error: ‘KelvinToCelsius’ was not declared in this scope

 

[Greg]

Where are you having difficulty? Do you know you need to declare a function

[m]double KelvinToCelsius(double valueKelvin) {. . .}[/m]​

?

 

[Teh]

Where are you having difficulty? Do you know you need to declare a function

[m]double KelvinToCelsius(double valueKelvin) {. . .}[/m]​

?

The issue I have was to understand how this works
if i was to change the function to KelvinToCelsius

double CelsiusToKelvin(double valueCelsius) {
   double valueKelvin = 0.0;

   valueKelvin = valueCelsius + 273.15;

   return valueKelvin;
}

- - - Updated - - -

The issue I have was to understand how this works
if i was to change the function to KelvinToCelsius

double CelsiusToKelvin(double valueCelsius) {
   double valueKelvin = 0.0;

   valueKelvin = valueCelsius + 273.15;

   return valueKelvin;
}

This what I got so far and thanks for the help

double KelvinToCelsius (double valueKelvin) {
   double valueCelsius = 0.0;
   
   valueCelsius = valueCelsius + 273.15;
   
   return valueCelsius;

}

output:

Testing with valueKelvin = 283.15
Expected value: 10
Your value: 273.15

 

[Greg]

If you solve [m]valueKelvin = valueCelsius + 273.15[/m] for [m]valueCelsius[/m], what do you get?