assignment8-1-1_fractioncalculator.cpp

this code is code c++. have many lesson

#include <iostream>
using namespace std;
struct Fraction{ 
       int num; 
       int den;
};

istream& operator>> (istream& ins, Fraction& f);
ostream& operator<< (ostream& outs, const Fraction& f);
Fraction operator- (const Fraction& f1, const Fraction& f2);
Fraction operator* (const Fraction& f1, const Fraction& f2);
Fraction operator/ (const Fraction& f1, const Fraction& f2);
int main(){
    
    Fraction f, g, h;
    cout << "\t\tCalculation Fractor in operator -,*,/" << endl;
    cout << "\t\t=====================================" << endl << endl;
    cout << "Enter Fraction : ";
    cin >> g;
    cout << "Enter Fraction : ";
    cin >> h;
    cout << "-----------------------" << endl;

    cout << "The operator (-) = ";
    f = g - h;
    cout << f << endl;
    cout << "The operator (*) = ";
    f = g * h;
    cout << f << endl;
    cout << "The operator (/) = ";
    f = g / h;
    cout << f << endl;
    cout << "-----------------------" << endl;
    
   
    system("pause");
    return 0;
}
istream& operator>> (istream& ins, Fraction& f){
     char slash;
     ins >> f.num >> slash >> f.den;
     return ins;
}

Fraction operator- (const Fraction& f1, const Fraction& f2){
// formula for the sum is a/b - c/d = (ad - bc) / bd;
     Fraction the_sum;
     the_sum.den = f1.den*f2.den;
     the_sum.num = f1.num*f2.den - f1.den*f2.num;
     for(int i=the_sum.den;i!=1;i--){
        if(the_sum.den%i==0&&the_sum.num%i==0){
        the_sum.den=the_sum.den/i;
        the_sum.num=the_sum.num/i;
        }
        }
     return the_sum;    
}
Fraction operator* (const Fraction& f1, const Fraction& f2){
// formula for the sum is a/b * c/d = ac / bd;
     Fraction the_sum;
     the_sum.den = f1.den*f2.den;
     the_sum.num = f1.num*f2.num;
     for(int i=the_sum.den;i!=1;i--){
        if(the_sum.den%i==0&&the_sum.num%i==0){
        the_sum.den=the_sum.den/i;
        the_sum.num=the_sum.num/i;
        }
        }
     return the_sum;    
}
Fraction operator/ (const Fraction& f1, const Fraction& f2){
// formula for the sum is (a/b) / (c/d) = (ad / bc);
     Fraction the_sum;
     the_sum.den = f1.den*f2.num;
     the_sum.num = f1.num*f2.den;
     for(int i=the_sum.den;i!=1;i--){
        if(the_sum.den%i==0&&the_sum.num%i==0){
        the_sum.den=the_sum.den/i;
        the_sum.num=the_sum.num/i;
        }
        }
     return the_sum;    
}
ostream& operator<< (ostream& outs, const Fraction& f){
     outs << f.num << '/' << f.den;
     return outs;
}