Programming Fundamentals/Condition Examples

Temperature

Pseudocode

```Function Main
Declare String choice

Assign choice = GetChoice()
If Choice = "C" Or Choice = "c"
Call ProcessCelsius()
False:
If Choice = "F" Or Choice = "f"
Call ProcessFahrenheit()
False:
Output "You must enter C to convert to Celsius or F to convert to Fahrenheit!"
End
End
End

Function CalculateCelsius (Real fahrenheit)
Declare Real celsius

Assign celsius = (fahrenheit - 32) * 5 / 9
Return Real celsius

Function CalculateFahrenheit (Real celsius)
Declare Real fahrenheit

Assign fahrenheit = celsius * 9 / 5 + 32
Return Real fahrenheit

Function DisplayResult (Real temperature, String fromScale, Real result, String toScale)
Output temperature & "° " & fromScale & " is " & result & "° " & toScale
End

Function GetChoice
Declare String choice

Output "Enter F to convert to Fahrenheit or C to convert to Celsius:"
Input Choice
Return String choice

Function GetTemperature (String scale)
Declare Real temperature

Output "Enter " & scale & " temperature:"
Input temperature
Return Real temperature

Function ProcessCelsius
Declare Real temperature
Declare Real result

Assign temperature = GetTemperature("Celsius")
Assign result = CalculateCelsius(temperature)
Call DisplayResult(temperature, "Fahrenheit", result, "Celsius")
End

Function ProcessFahrenheit
Declare Real temperature
Declare Real result

Assign temperature = GetTemperature("Fahrenheit")
Assign result = CalculateFahrenheit(temperature)
Call DisplayResult(temperature, "Celsius", result, "Fahrenheit")
End
```

Output

```Enter C to convert to Celsius or F to convert to Fahrenheit:
c
Enter Fahrenheit temperature:
100
100° Fahrenheit is 37.7777777777778° Celsius

Enter C to convert to Celsius or F to convert to Fahrenheit:
f
Enter Celsius temperature:
100
100° Celsius is 212° Fahrenheit

Enter C to convert to Celsius or F to convert to Fahrenheit:
x
You must enter C to convert to Celsius or F to convert to Fahrenheit.
```