Code to teach symbolic execution in Linux.

symbolicCalculator.cpp

// MIT License
//
// Copyright (c) 2021 Saket Upadhyay
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.

#include <iostream>
#include <string>

std::string get_selfpath(const char *namearg)
{
    return namearg;
}

int main(int argc, char const *argv[])
{

    if (get_selfpath(argv[0]) == "add")
    {
        std::cout << "ADD MODE" << std::endl;
        if (argc >= 3)
        {
            int sum = 0;
            for (size_t i = 1; i < argc; i++)
            {
                sum = sum + atoi(argv[i]);
            }

            std::cout << "The result of addition is = " << sum << std::endl;

            return 0;
        }
        else
        {
            std::cout << "Not enough input." << std::endl;
        }

        return 0;
    }
    else if (get_selfpath(argv[0]) == "sub")
    {
        std::cout << "SUB MODE" << std::endl;
        if (argc >= 3)
        {
            int sum = atoi(argv[1]);
            for (size_t i = 2; i < argc; i++)
            {
                sum = sum - atoi(argv[i]);
            }

            std::cout << "The result of subtraction is = " << sum << std::endl;

            return 0;
        }
        else
        {
            std::cout << "Not enough input." << std::endl;
        }
    }
    else if (get_selfpath(argv[0]) == "mul")
    {
        std::cout << "MUL MODE" << std::endl;
        if (argc >= 3)
        {
            int sum = 1;
            for (size_t i = 1; i < argc; i++)
            {
                sum = sum * atoi(argv[i]);
            }

            std::cout << "The result of multiplication is = " << sum << std::endl;

            return 0;
        }
        else
        {
            std::cout << "Not enough input." << std::endl;
        }
    }
    else
    {
        return -1;
    }

    return 0;
}