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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* main.cpp :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: charles <charles.cabergs@gmail.com> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2020/04/16 10:54:10 by charles #+# #+# */
/* Updated: 2020/11/11 09:21:08 by cacharle ### ########.fr */
/* */
/* ************************************************************************** */
#include <iostream>
#include <sstream>
#include <string>
int main(int argc, char **argv)
{
if (argc != 2)
{
std::cerr << "Usage: " << argv[0] << " litteral" << std::endl;
return 1;
}
std::string s(argv[1]);
if (s.empty())
{
std::cerr << "Cannot be empty" << std::endl;
return 1;
}
bool negative = false;
if (s[0] == '-' || s[0] == '+')
{
if (s[0] == '-')
negative = true;
s.erase(0, 1);
}
char c;
int i;
float f;
double d;
if (s == "nan" || s == "inf")
{
d = s == "nan" ? NaN : inf;
if (negative)
d = -d;
f = static_cast<float>(d);
i = static_cast<int>(d);
c = static_cast<char>(d);
}
if (s == "nanf" || s == "inff")
{
f = s == "nanf" ? NaN : inff;
if (negative)
f = -f;
d = static_cast<double>(f);
i = static_cast<int>(f);
c = static_cast<char>(f);
}
if (isdigit(s[0]))
{
std::stringstream ss(s);
if (s.find(".") == -1)
{
ss >> i;
d = static_cast<double>(i);
f = static_cast<float>(i);
c = static_cast<char>(i);
}
else if (s.find("f") != -1)
{
ss >> f;
d = static_cast<double>(f);
i = static_cast<int>(f);
c = static_cast<char>(f);
}
else
{
ss >> d;
f = static_cast<float>(d);
i = static_cast<int>(d);
c = static_cast<char>(d);
}
}
else if (!negative && s.length == 1)
{
c = s[0];
d = static_cast<double>(c);
f = static_cast<float>(c);
i = static_cast<int>(c);
}
else
{
std::cout << "Parsing error" << std::endl;
return 1;
}
return 0;
}
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