functions.h
//programmers: Anjum and Fletcher
//file: functions.h
#ifndef FUNCtiONS_H
#define FUNCTIONS_H
# include <string>
# include <iostream>
using namespace std;
//function prototypes
/* Description: The presentMenuOptions() function will output available menu options to the screen..
Pre: None..
Post: Menu options output to the screen.
*/
void presentMenuOptions();
/* Description: The getInteger() function will ask user to input an integer and validate the
input to lie between parameter min and parameter max..
Pre: parameter min must be less than parameter max..
Post: Outputs a message to the screen asking the user to input an integer that lies betwen
min and max.
Returns the valid integer input.
*/
int getInteger(const int min, const int max);
/* Description: The getInteger() function will ask user to input an integer and validate the
input to be greater than parameter min..
Pre: None..
Post: outputs a message to the screen asking the user to input an integer greater than min.
Returns the validated integer.
*/
int getInteger(const int min);
/* Description: The getBoolean() function will ask the user to input an answer to the question that
will be passed as parameter correctly..
Pre: None..
Post: outputs a message to the screen asking the user to input an answer to a question.
returns the user's answer.
*/
bool getBoolean(const string question);
/* Description: The getHairIndex() function will ask user to input a valid hair color and returns
the hair index associated to that color..
Pre: None..
Post: outputs a message to the screen asking the user to input a valid hair color.
returns the hair index of that color.
*/
float getHairIndex();
/* Description: The getAlienHeight() function will ask the user to input a valid alien height and
will return the valid input..
Pre: None..
Post: outputs a message to the screen asking the user to input a valid alien height.
returns the height of the alien.
*/
int getAlienHeight();
/* Description: The getWavelength() function will compute and return the wave length based on the
hairIndex parameter passed..
Pre: parameter hairIndex must be associated to a hair color..
Post: returns the wave length based on the hairIndex passed.
*/
float getWavelength(const float hairIndex);
/* Description: The getWavelength() function will compute and return the wave length based on the
hairIndex parameter passed..
Pre: parameter n must lie within a range specified by the user.
parameter hairIndex must be associated to a hair color..
Post: returns the wave length based on the hairIndex passed.
*/
float getWavelength(const int n, const float hairIndex);
/* Description: The getWavelength() function will compute and return the wave length depending on
whether the noodle soup is home made or not.
Pre: parameter n must be greater than a minimum value specified by the user..
Post: returns the wave length based on whether or not the noodle soup is home made.
*/
float getWavelength(const int n, const bool isHomeMade);
/* Description: The getWavelength() function will compute and output the wave length of light
based on the height of the alien and the goo grade..
Pre: parameter goo grade must lie within a range specified by the user..
parameter alienHeight must be a valid alien height.
Post: returns the wavelength based on the gooGrade and alienHeight.
*/
float getWavelength(const int gooGrade, const int alienHeight);
/* Description: The goodbye() function will output a signoff message to the screen..
Pre: None..
Post: Signoff message output to the screen.
*/
void goodbye();
#endif