Fraction Program... ( This is a really ugly version)

/*
    This is a simple Fraction Math Program

    This is a really retarded version of it
*/

#include <iostream>

using namespace std;

// This function allows for typing in a fraction
void typed_fraction(int& num, int& dem) {
    cin >> num;
    cout << "__" << endl;
    cin >> dem;
}

// This will make both fraction have the same denomenator
void equalize_fraction(int& n1, int& d1, int& n2, int& d2) {
    int temp1 = d1, temp2 = d2;

    n1 *= temp2;
    d1 *= temp2;

    n2 *= temp1;
    d2 *= temp1;
}

// This simply prints of the answer
void print_answer(char op, int& n1, int& d1, int& n2, int& d2, int& n3, int& d3) {
    if(n3 == d3) {
        cout << "1";
    } else {
        cout << n3 << "/" << d3;
    }

    cout << " = " << n1 << "/" << d1 << " " << op << " "<< n2 << "/" << d2 << endl;
}

int main() {
    unsigned char op;
    int num1, dem1, num2, dem2, anum, adem;

    cout << "Please type in the first fraction" << endl;
    typed_fraction(num1, dem1);

    cout << "Please type in the second fraction" << endl;
    typed_fraction(num2, dem2);

    cout << "Please type in the operator, (+, -, *, /) " << endl;

    cin >> op;

    if(op == '+') {

        if(dem1 != dem2) {
            equalize_fraction(num1, dem1, num2, dem2);
        }

        anum = num1 + num2;
        adem = dem1;

        print_answer(op, num1, dem1, num2, dem2, anum, adem);

    } else if(op == '-') {

        if(dem1 != dem2) {
            equalize_fraction(num1, dem1, num2, dem2);
        }

        anum = num1 - num2;
        adem = dem1;
        print_answer(op, num1, dem1, num2, dem2, anum, adem);

    } else if(op == '*') {

        anum = num1 * num2;
        adem = dem1 * dem2;

        print_answer(op, num1, dem1, num2, dem2, anum, adem);
    } else if(op == '/') {

        anum = num1 * dem2;
        adem = dem1 * num2;

        print_answer(op, num1, dem1, num2, dem2, anum, adem);

    } else {
        cout << "Invalid operator " << op << " please use (+, -, *, /)" << endl;
    }

    return 0;
}