2-8

#include <iostream>
#include <string>
using namespace std;
struct fraction{
    int numerator;
    int denominator;};
int main()
{
    char ch;
    float answer;
    fraction fraction1, fraction2;
    cout << "First fraction: " << endl;
    cin >> fraction1.numerator;
    cout << "denominator: " << endl;
    cin >> fraction1.denominator;
    cout << "Second fraction: " << endl;
    cin >> fraction2.numerator;
    cout << "denominator: " << endl;
    cin >> fraction2.denominator;
    cout << "Char: ";
    cin >> ch;
    switch(ch){
        case '+':
            answer = (fraction1.numerator * fraction2.denominator + fraction2.numerator * fraction1.denominator);
            answer /= fraction1.denominator * fraction2.denominator;
            cout << "Answer is: " << answer;
            break;
        case '-':
            answer = fraction1.numerator * fraction2.denominator - fraction2.numerator * fraction1.denominator;
            answer /= fraction1.denominator * fraction2.denominator;
            cout << "Answer is: " << answer;
            break;
        case '*':
            answer = fraction1.numerator * fraction2.numerator;
            answer /= fraction1.denominator * fraction2.denominator;
            cout << "Answer is: " << answer;
            break;
        case '/':
            answer = fraction1.numerator * fraction2.denominator;
            answer /= fraction1.denominator * fraction2.numerator;
            cout << "Answer is: " << answer;
            break;}
    return 0;
}