#include "stdafx.h"
#include "iostream"
#include "conio.h"
using namespace std;

int StringToInt(const char * str)
{
    char * pLastChar = NULL;
    int param = strtol(str, &pLastChar, 10);
    return param;
}

int main(int argc, char*argv[])
{
    char symbol = *argv[2];
    if (symbol == '+')
        cout << "a1 + b1 = " << StringToInt(argv[1]) + StringToInt(argv[3]);
    else
    if (symbol == '-')
        cout << "a1 - b1 = " << StringToInt(argv[1]) - StringToInt(argv[3]);
    else
    if (symbol == '*')
        cout << "a1 * b1 = " << StringToInt(argv[1]) * StringToInt(argv[3]);
    else
        cout << "a1 / b1 = " << StringToInt(argv[1]) / StringToInt(argv[3]);
    return 0;
}