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. Flowchart 750px|top|Conditions flowchart 225px|top|Conditions ProcessCelsius flowchart 225px|top|Conditions ProcessFahrenheit flowchart 250px|top|Conditions GetChoice flowchart 250px|top|Conditions GetTemperature flowchart 225px|top|Conditions CalculateCelsius flowchart 225px|top|Conditions CalculateFahrenheit flowchart 400px|top|Conditions DisplayResult flowchart References Wikiversity: Computer Programming