A18-0-2.cpp

// Rule: A18-0-2
// Source line: 28442
// Original file: A18-0-2.cpp

// $Id: A18-0-2.cpp 312092 2018-03-16 15:47:01Z jan.babst $
#include <cstdint>
#include <cstdlib>
#include <iostream>
#include <string>


std::int32_t F1(const char* str) noexcept
{
    return atoi(str); // Non-compliant - undefined behavior if str can not
// be converted
}
std::int32_t F2(std::string const& str) noexcept(false)
{
    return std::stoi(str); // Compliant - throws a std::invalid_argument
// exception if str can not be converted
}


std::uint16_t ReadFromStdin1() // non-compliant
{
    std::uint16_t a;
    std::cin >> a; // no error detection
    return a;
}


std::uint16_t ReadFromStdin2()
{
    std::uint16_t a;

// compliant


    std::cin.clear(); // clear all flags
    std::cin >> a;
    if (std::cin.fail())
    {
        throw std::runtime_error{"unable to read an integer"};
    }
    std::cin.clear(); // clear all flags for subsequent operations
    return a;


}