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This question is about C++! Honestly, I'm not sure what I am doing right or wrong....

This question is about C++!

Honestly, I'm not sure what I am doing right or wrong. Using just functions, nothing else, I am trying to create a program that uses nothing but functions to take in two fractions, add these fractions, divide these fractions, and then display the simplified fraction all from within a menu. I would very much appreciate any leads, aid, or description on what I've done right and wrong. Thanks!

#include <iostream>

using namespace std;

//Description: Function to greet user

//Pre: None

//Post: Displays the greeting to the program

void greetings();

//Description: Function to bid farewell to user

//Pre: None

//Post: Displays the sign off message for the program

void goodbyes();

//Description: Function to choose the menu options

//Pre: None

//Post: The selection given in the function is sent to the

// switch case for the menu

int menuOptions(int & menu);

//Description: Function to enter fractions

//Pre: None

//Post: Entering of the fractions to be used throughout the program

void enterFractions(int & numerator, int & denominator);

//Description: Function to display fractions

//Pre: Needs either the sum or the divison of the two fractions

//Post: Takes in the new fraction and displays

void displayFractions(int & newNum, int & newDenom);

//Description: Function to enter add the fractions

//Pre: Needs the input of the fractions

//Post: Creates the sum of the two fractions

void addFractions(int & numeratorOne, int & numeratorTwo,

int & denominatorOne, int & denominatorTwo, int & newNum, int & newDenom);

//Description: Function to divide the fractions

//Pre: Needs the input of the fractions

//Post: Creates the divison of the two fractions

void divideFractions(int & numeratorOne, int & numeratorTwo,

int & denominatorOne, int & denominatorTwo, int & newNum, int & newDenom);

//Description: Function to simplify the fractions

//Pre: Needs the un-simplified solution from addition or divison

//Post: Outputs the simplified fraction for the display function

void simplifyFractions(int & newNum, int & newDenom);

//Main Function, structure of the function calls and switch case

int main()

{

int menu;

int numeratorOne, numeratorTwo, denominatorOne, denominatorTwo;

int newNum, newDenom;

greetings();

do

{

menu = menuOptions(menu);

switch(menu)

{

case 1:

{

inputFractions(numeratorOne, denominatorOne);

inputFractions(numeratorTwo, denominatorTwo);

break;

}

case 2:

{

addFractions(numeratorOne, numeratorTwo, denominatorOne,

denominatorTwo);

break;

}

case 3:

{

divideFractions(numeratorOne, numeratorTwo, denominatorOne,

denominatorTwo);

break;

}

case 4:

{

displayFractions(newNum, newDenom);

break;

}

}

} while (!menu == 5);

return 0;

}

//Function descriptions

void greetings()

{

cout<<"Welcome to the Moe fraction solver!"<<endl;

cout<<" "<<endl;

return;

}

void goodbyes()

{

cout<<"Congrats! You used the program, have a good day."<<endl;

cout<<" "<<endl;

return;

}

int menuOptions(int & menu)

{

cout<<"Choose one of the following menu options: "<<endl;

cout<<" "<<endl;

cout<<"Enter 1 to input fractions."<<endl;

cout<<"Enter 2 to add fractions."<<endl;

cout<<"Enter 3 to divide fractions."<<endl;

cout<<"Enter 4 to display the simplified fractions."<<endl;

cout<<"Enter 5 to quit."<<endl;

cout<<" "<<endl;

return menu;

}

void enterFractions(int & numerator, int & denominator)

{

int numerator;

int denominator;

cout<<"Enter the numerator: "<<endl;

cin>>numerator;

cout<<"Enter the denominator: "<<endl;

cout<<" "<<endl;

return;

}

void displayFractions(int & newNum, int & newDenom)

{

simplifyFractions(newNum, newDenom);

cout<<"The simplified fraction solution is: "<<endl;

cout<<newNum<<"/"<<newDenom<<endl;

return;

}

void addFractions(int & numeratorOne, int & numeratorTwo,

int & denominatorOne, int & denominatorTwo, int & newNum, int & newDenom)

{

newDenom = denominatorOne * denominatorTwo;

newNum = (numeratorOne * denominatorTwo) + (numeratorTwo * denominatorOne);

return;

}

void divideFractions(int & numeratorOne, int & numeratorTwo,

int & denominatorOne, int & denominatorTwo, int & newNum, int & newDenom)

{

newNum = numeratorOne * denominatorTwo;

newDenom = denominatorOne * numeratorTwo;

return;

}

void simplifyFractions(int & newNum, int & newDenom)

{

for(int i = newNum * newDenom; i > 1; i--)

{

if((newNum % i) == 0 && (newDenom % i) == 0)

{

newNum = newNum / i;

newDenom = newDenom / i;

}

}

return;

}

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Homework Answers

Answer #1

// i have tried to make code work. if any problem u get, u can ask me. thank you.

//try this code now.

#include <iostream>

using namespace std;

void greetings();


void goodbyes();

int menuOptions();


void enterFractions();

void displayFractions(int & newNum, int & newDenom);

void addFractions(int & numeratorOne, int & numeratorTwo,

int & denominatorOne, int & denominatorTwo);

void divideFractions(int & numeratorOne, int & numeratorTwo,

int & denominatorOne, int & denominatorTwo);

void simplifyFractions(int & newNum, int & newDenom);

int main()

{

int menu;

int numeratorOne, numeratorTwo, denominatorOne, denominatorTwo;

int newNum, newDenom;

greetings();

do

{

menu = menuOptions();

switch(menu)

{

case 1:

{

enterFractions();

enterFractions();

break;

}

case 2:

{

addFractions(numeratorOne, numeratorTwo, denominatorOne,denominatorTwo);

break;

}

case 3:

{

divideFractions(numeratorOne, numeratorTwo, denominatorOne,denominatorTwo);

break;

}

case 4:

{

displayFractions(newNum, newDenom);

break;

}

}

} while (!menu == 5);

return 0;

}


void greetings()

{

cout<<"Welcome to the Moe fraction solver!"<<endl;

cout<<" "<<endl;

return;

}

void goodbyes()

{

cout<<"Congrats! You used the program, have a good day."<<endl;

cout<<" "<<endl;

return;

}

int menuOptions()

{
int s;

cout<<"Choose one of the following menu options: "<<endl;

cout<<" "<<endl;

cout<<"Enter 1 to input fractions."<<endl;

cout<<"Enter 2 to add fractions."<<endl;

cout<<"Enter 3 to divide fractions."<<endl;

cout<<"Enter 4 to display the simplified fractions."<<endl;

cout<<"Enter 5 to quit."<<endl;

cout<<" "<<endl;
cin>>s;
return s;

}

void enterFractions()

{

int numerator;

int denominator;

cout<<"Enter the numerator: "<<endl;

cin>>numerator;

cout<<"Enter the denominator: "<<endl;
cin>>denominator;

cout<<" "<<endl;

return;

}

void displayFractions(int & newNum, int & newDenom)

{

simplifyFractions(newNum, newDenom);

cout<<"The simplified fraction solution is: "<<endl;

cout<<newNum<<"/"<<newDenom<<endl;

return;

}

void addFractions(int & numeratorOne, int & numeratorTwo,int & denominatorOne, int & denominatorTwo)

{

int newDenom = denominatorOne * denominatorTwo;

int newNum = (numeratorOne * denominatorTwo) + (numeratorTwo * denominatorOne);

return;

}

void divideFractions(int & numeratorOne, int & numeratorTwo,int & denominatorOne, int & denominatorTwo)

{

int newNum = numeratorOne * denominatorTwo;

int newDenom = denominatorOne * numeratorTwo;

return;

}

void simplifyFractions(int & newNum, int & newDenom)

{

for(int i = newNum * newDenom; i > 1; i--)

{

if((newNum % i) == 0 && (newDenom % i) == 0)

{

newNum = newNum / i;

newDenom = newDenom / i;

}

}

return;

}

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