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Copy pathcpa_lab_5_3_10_(9)-B.cpp
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cpa_lab_5_3_10_(9)-B.cpp
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#include <iostream>
#include <string>
#include <sstream>
#include <stdlib.h>
using namespace std;
class Fraction {
public:
Fraction(int numerator, int denominator);
string toString();
double toDouble();
Fraction plus(Fraction that);
Fraction minus(Fraction that);
Fraction times(Fraction that);
Fraction by(Fraction that);
private:
int numerator;
int denominator;
void reduce();
};
void Fraction::reduce() {
int a;
if (this->numerator < 0)
a = -this->numerator;
else
a = this->numerator;
int b = this->denominator;
while (a != 0 && b != 0) {
if (a > b)
a %= b;
else
b %= a;
}
this->numerator /= (a + b);
this->denominator /= (a + b);
}
Fraction Fraction::times(Fraction that)
{
int num = this->numerator * that.numerator;
int den = this->denominator * that.denominator;
Fraction result(num, den);
result.reduce();
return result;
}
Fraction Fraction::by(Fraction that)
{
int num = this->numerator * that.denominator;
int den = this->denominator * that.numerator;
Fraction result(num, den);
result.reduce();
return result;
}
Fraction Fraction::plus(Fraction that)
{
int den = this->denominator * that.denominator;
int num = that.denominator*this->numerator + that.numerator * this->denominator;
Fraction result(num, den);
result.reduce();
return result;
}
Fraction Fraction::minus(Fraction that)
{
int den = this->denominator * that.denominator;
int num = that.denominator*this->numerator - that.numerator * this->denominator;
Fraction result(num, den);
result.reduce();
return result;
}
Fraction::Fraction(int numerator, int denominator) {
if (denominator == 0) {
this->denominator = 1;
this->numerator = numerator;
}
else if (denominator < 0) {
this->denominator = -denominator;
this->numerator = -numerator;
}
else {
this->denominator = denominator;
this->numerator = numerator;
}
}
string to_string(int value){
stringstream ss;
ss << value;
return ss.str();
}
string Fraction::toString() {
if (numerator * denominator < 0)
{
if (numerator % denominator == 0)
return to_string(numerator / denominator);
if (numerator / denominator == 0)
return to_string(numerator) + (string)"/" + to_string(denominator);
return to_string(numerator / denominator) + (string)" " +
to_string(-(numerator % denominator)) + (string) "/" + to_string(denominator);
}
if (numerator % denominator == 0)
return to_string(numerator / denominator);
if (numerator / denominator == 0)
return to_string(numerator) + (string)"/" + to_string(denominator);
return to_string(numerator / denominator) + (string)" " +
to_string(numerator % denominator) + (string) "/" + to_string(denominator);
}
double Fraction::toDouble() {
return float(numerator) / denominator;
}
int main(void) {
int num, den;
std::string input = "", i2;
getline(cin, input);
num = atoi((input.substr(0, input.find("/"))).c_str());
den = atoi((input.substr(input.find("/") + 1)).c_str());
Fraction fraction(num, den);
getline(cin, i2);
num = atoi((i2.substr(0, i2.find("/"))).c_str());
den = atoi((i2.substr(i2.find("/") + 1)).c_str());
Fraction fraction2(num, den);
cout << fraction.toString() << " + " << fraction2.toString() << " = " << fraction.plus(fraction2).toString() << endl;;
cout << fraction.toString() << " - " << fraction2.toString() << " = " << fraction.minus(fraction2).toString() << endl;
cout << fraction.toString() << " * " << fraction2.toString() << " = " << fraction.times(fraction2).toString() << endl;
cout << fraction.toString() << " / " << fraction2.toString() << " = " << fraction.by(fraction2).toString() << endl;
return 0;
}