Fraction Computation file

fraction.cpp

/**********************************************
* fraction.cpp: this handles all of the actual
computations done to the fractions.           *
***********************************************/
#include <iostream>
using namespace std;
#include "fraction.h"

/**********************************************
* setValues function: this function is pretty
self explanitory it sets the values for a 
certain fraction.                             *
***********************************************/
void Fraction :: setValues(int x, int y){
	num = x;
	denom = y;
}

/**********************************************
* plus function: this function adds the two
fractions together and returns the answer.    *
***********************************************/
Fraction Fraction :: plus(Fraction f){
	Fraction frac;
	if(denom == f.denom){
		num += f.num;
	}
	else{
		num = (num * f.denom) + (f.num * denom);
		denom *= f.denom;
	}
	frac.setValues(num, denom);
	return frac;
}

/**********************************************
* minus function: this function subtracts the 
two fractions together and returns the answer.*
***********************************************/
Fraction Fraction :: minus(Fraction f){
	Fraction frac;
	if(denom == f.denom){
		num -= f.num;
	}
	else{
		num = (num * f.denom) - (f.num * denom);
		denom *= f.denom;
	}
	frac.setValues(num, denom);
	return frac;
}
/**********************************************
* times function: this function multiplies the 
two fractions together and returns the answer.*
***********************************************/
Fraction Fraction :: times(Fraction f){
	Fraction frac;
	num *= f.num;
	denom *= f.denom;
	frac.setValues(num, denom);
	return frac;
}
/**********************************************
* divide function: this function divides the 
two fractions together and returns the answer.*
***********************************************/
Fraction Fraction :: divide(Fraction f){
	Fraction frac;
	num *= f.denom;
	denom *= f.num;
	frac.setValues(num, denom);
	return frac;
}
/**********************************************
* reduce function: this function reduces the 
fraction and returns the answer.              * 
***********************************************/
Fraction Fraction :: reduce(){
	Fraction frac;
	bool switcher = false;
	if(num < 0 && denom < 0){
		num *= -1;
		denom *= -1;
		switcher = false;
	}
	else if(num < 0){
		num *= -1;
		switcher = true;
	}
	else if(denom < 0){
		denom *= -1;
		switcher = true;
	}
	if(num == 0){
		num = 0; 
		denom = 1;
		frac.setValues(num, denom);
		return frac;
	}
	else if(denom == 0 && num != 0){
		frac.setValues(num, denom);
		return frac;
	}
	if(num == denom && num != 0){
		num = 1; 
		denom = 1;
	}
	else if(num > denom){
		for(int i = denom; i > 0; i--){
			if(num%i == 0 && denom%i == 0){
				num = num/i;
				denom = denom/i;
			}	
		}	
	}
	else if(num < denom){
		for(int i = num; i > 0; i--){
			if(num%i == 0 && denom%i == 0){
				num = num/i;
				denom = denom/i;
			}
		}
	}
	if(switcher == true){
		num *= -1;
	} 
	frac.setValues(num, denom);
	return frac;
}
/**********************************************
* print function: this function prints the 
fraction to the console.                      *
***********************************************/
void Fraction :: print(){
	if(denom == 0){
		cout << "No real numbers because of the 0 in the denominator" << endl;
	}
	else if(denom == 1 && num == 0){
		cout << num << endl;
	}
	else if(denom == 1){
		cout << num << endl;
	}
	else{
		cout << num << "/" << denom << endl;
	}
}