22-11-2016

#include <iostream>

using std::cout;
using std::cin;
using std::endl;

void main()
{
    setlocale(LC_ALL, "Russian");
    float a, b;
    char s;
    cout << "Введите выражение: "; cin >> a >> s >> b;

    switch (s)
    {
    case '+':
        cout << "a + b = " << a + b << endl;
        break;
    case '-':
        cout << "a - b = " << a - b << endl;
        break;
    case '*':
        cout << "a * b = " << a * b << endl;
        break;
    case '/':
        cout << "a / b = " << a / b << endl;
        break;
    default:
        cout << "Ввод некорректен!" << endl;
    }

    /*if (s == '+')
    {
        cout << "a + b = " << a + b << endl;
    }
    else if (s == '-')
    {
        cout << "a - b = " << a - b << endl;
    }
    else if (s == '*')
    {
        cout << "a * b = " << a * b << endl;
    }
    else if (s == '/')
    {
        if (b == 0)
        {
            cout << "a / b = " << 0 << endl;
        }
        else
        {
        cout << "a / b = " << a / b << endl;
        }
    }
    else
    {
        cout << "Ваш ответ не корректен :(" << endl;
    }*/
}