[C++] Simple calculator

Got bored, made a simple calculator in C++

Not really much functionality right now, as its impractical to use instead of the Microsoft calculator.

Code:

---

#include <iostream>
#include <string.h>

using namespace std;

//Simple Calculator
//By Flareboy323

string Entry;
int m_num_1;
int m_num_2;
int a_num_1;
int a_num_2;
int d_num_1;
int d_num_2;
int s_num_1;
int s_num_2;

int main()
{
    cout << "Basic C++ Calculator by Flareboy323.\n";
    cout << "What would you like to do? Enter /help for a list of commands, or /exit to exit.\n\n";
    cin >> Entry;
    if (Entry == "/help")
    {
        cout << "Type -m for multiplication, -a for addition, -s for subtraction, and -d for division" << endl << endl;
        cin >> Entry;
    }
    if (Entry == "-m")
    {
        cout << "Multiplication Selected. Enter the first number you would like to multiply.\n";
        cin >> m_num_1;
        cout << "Now enter the second number you would like to multiply.\n";
        cin >> m_num_2;
        cout << m_num_1 << " times " << m_num_2 << " equals " << m_num_1 * m_num_2 << endl;
        cin >> Entry;
    }
    if (Entry == "-a")
    {
        cout << "Addition Selected. Enter the first number you would like to add.\n";
        cin >> a_num_1;
        cout << "Now enter the second number you would like to multiply.\n";
        cin >> a_num_2;
        cout << a_num_1 << " plus " << a_num_2 << " equals " << a_num_1 + a_num_2 << endl;
        cin >> Entry;
    }
    if (Entry == "-d")
    {
        cout << "Division Selected. Enter the first number you would like to divide.\n";
        cin >> d_num_1;
        cout << "Now enter the second number you would like to divide.\n";
        cin >> d_num_2;
        cout << d_num_1 << " devided by " << d_num_2 << " equals " << d_num_1/d_num_2 << endl;
        cin >> Entry;
    }
    if (Entry == "-s")
    {
        cout << "Subtraction Selected. Enter the first number you would like to subtract.\n";
        cin >> s_num_1;
        cout << "Now enter the second number you would like to divide.\n";
        cin >> s_num_2;
        cout << s_num_1 << " minus " << s_num_2 << " equals " << s_num_1/s_num_2 << endl;
        cin >> Entry;
    }
}

---

Also, bummed it down to make it as short as possible (Just for fun):

Code:

---

#include <iostream>
#include <string.h>
using namespace std;
string Entry;
int m1;
int m2;
int a1;
int a2;
int d1;
int d2;
int s1;
int s2;
int main()
{
    cin >> Entry;
    if (Entry == "/help")
    {
        cout << "-m = multiplication, -a = addition, -s = subtraction, -d = division" << endl << endl;
        cin >> Entry;
    }
    if (Entry == "-m")
    {
        cout << "Enter first number.\n";
        cin >> m1;
        cout << "Enter second number.\n";
        cin >> m2;
        cout << m1 << " * " << m2 << " = " << m1 * m2 << endl;
        cin >> Entry;
    }
    if (Entry == "-a")
    {
        cout << "Enter first number.\n";
        cin >> a1;
        cout << "Enter second number.\n";
        cin >> a2;
        cout << a1 << " + " << a2 << " = " << a1 + a2 << endl;
        cin >> Entry;
    }
    if (Entry == "-d")
    {
        cout << "Enter first number.\n";
        cin >> d1;
        cout << "Enter second number.\n";
        cin >> d2;
        cout << d1 << " / " << d2 << " = " << d1/d2 << endl;
        cin >> Entry;
    }
    if (Entry == "-s")
    {
        cout << "Enter first number.\n";
        cin >> s1;
        cout << "Enter second number.\n";
        cin >> s2;
        cout << s1 << " - " << s2 << " = " << s1/s2 << endl;
        cin >> Entry;
    }
}

---

Enjoy! :)

I'm going to be making a GUI version soon using Qt.