hw6fncts.cpp

// Programmer: Jennifer Leopold date: October 4, 2014

// File: hw6fncts.cpp

// Purpose: This file contains the definitions of the functions

// disease diagnosis program.

#include <string>

#include <iostream>

#include <cstdlib>

#include <ctime>

#include "hw6.h"

using namespace std;

void greet()

{

cout << "\nWelcome to " << PROGRAM_NAME << endl;

return;

}

void outputProteinData(const proteinData pData)

{

cout << "Protein Data:\n";

cout << "\tProtein p1 = ";

if (pData.p1 == -1)

cout << COLLECTION_ERROR;

else cout << pData.p1 << endl;

cout << "\tProtein p2 = ";

if (pData.p2 == -1)

cout << COLLECTION_ERROR;

else cout << pData.p2 << endl;

cout << "\tProtein p3 = ";

if (pData.p3 == -1)

cout << COLLECTION_ERROR;

else cout << pData.p3 << endl;

cout << "\tProtein p4 = ";

if (pData.p4 == -1)

cout << COLLECTION_ERROR;

else cout << pData.p4 << endl;

cout << "\tProtein p5 = ";

if (pData.p5 == -1)

cout << COLLECTION_ERROR;

else cout << pData.p5 << endl;

return;

}

bool getProteinData(proteinData &collectedData)

{

short p1a = -1, p1b = -1; // Protein data values to be

float p2a= -1, p2b = -1; // collected; -1 means not

short p3 = -1; // yet actually collected

short p4a = -1, p4b = -1;

short p5 = -1;

bool p1Collected = false, // Easier way to keep track

p2Collected = false, // of whether each protein

p3Collected = false, // got collected than

p4Collected = false, // checking for -1 values

p5Collected = false;

if (toneWasHeard("A-flat"))

{

toneA(p1a, p2a, p3);

p1Collected = true;

p2Collected = true;

p3Collected = true;

}

if (toneWasHeard("middle-G"))

{

toneG(p2b, p4a);

p2Collected = true;

p4Collected = true;

}

if (toneWasHeard("C-flat"))

{

toneC(p1b, p4b, p5);

p1Collected = true;

p4Collected = true;

p5Collected = true;

}

// Note: When multiple tone tests can collect a

// protein, we want either the max or min of those

// values depending on which protein it is

collectedData.p1 = (p1a > p1b)? p1a : p1b;

collectedData.p2 =

((p2a < p2b) && (p2a != -1))? p2a : p2b;

collectedData.p3 = p3;

collectedData.p4 = (p4a > p4b)? p4a : p4b;

collectedData.p5 = p5;

// Overall data collection successful if all proteins

// were collected

return(p1Collected && p2Collected && p3Collected &&

p4Collected && p5Collected);

}

bool toneWasHeard(const string tone)

{

bool wasHeard;

// Sometimes tone will not be heard

wasHeard = ((rand() % 100) + 1) >

HOW_OFTEN_TONE_NOT_HEARD;

if (!wasHeard)

cout << "\nTone " << tone << " was not heard!\n\n";

return(wasHeard);

}

void toneA(short &p1, float &p2, short &p3)

{

p1 = getProteinP1();

p2 = getProteintP2();

p3 = rand() % MAX_VAL_FOR_P3;

return;

}

void toneG(float &p2, short &p4)

{

p2 = getProteintP2();

p4 = getProteintP4();

return;

}

void toneC(short &p1, short &p4, short &p5)

{

p1 = getProteinP1();

p4 = getProteintP4();

p5 = rand() % MAX_VAL_FOR_P5;

return;

}

short getProteinP1()

{

short p1 = rand() % MAX_VAL_FOR_P1;

if (p1 < 10)

p1 = 0; // p1 is undetectable when less than 10

return(p1);

}

float getProteintP2()

{

return(rand() % MAX_VAL_FOR_P1);

}

short getProteintP4()

{

return((rand() % MAX_VAL_FOR_P4) + 10);

}

bool determinePrognosis(const proteinData &pData)

{

bool hasDisease = false;

if (pData.p2 <= 14.6)

hasDisease = true;

else

{

if (pData.p5 < 2)

{

hasDisease = (pData.p4 > 20) &&

(pData.p4 < 40) &&

(pData.p3 > 6);

}

else // pData.p5 >= 2

{

hasDisease = (pData.p1 + pData.p2 + pData.p3) < 75;

}

}

return(hasDisease);

}

bool promptForBool(string prompt)

{

bool invalidInput; // true if input not 'y' or 'n'

char inputValue; // user's input

do

{

cout << prompt << " (y/n) ";

cin >> inputValue;

invalidInput = (inputValue != 'y') &&

(inputValue != 'n');

if (invalidInput)

cout << "Invalid input!\n";

} while (invalidInput);

return(inputValue == 'y');

}

void goodbye()

{

cout << "\nShutting down "

<< PROGRAM_NAME << endl;

cout << "Goodbye...\n";

return;

}