#include <iostream>

#include <string>

#include <fstream>

void test_endless_cin()

{

std::cout << "\n# test_endless_cin\n";

std::cout << "endless std::cin>>int, type ctrl+z(win) ctrl+d(*nix) to stop: ";

int x;

while (std::cin >> x) //ctrl+z to break

{

std::cout << "cout: " << x + 1 << std::endl

<< "endless std::cin, type ctrl+z(win) ctrl+d(*nix) to stop: ";

}

}

void test_cout_char_array()

{

std::cout << "\n# test_cout_char_array\n";

char z0[4] = {'2', '3', '3'};

std::cout << "[4]{'2', '3', '3'}: " << z0 << std::endl;

// char z1[3] = {'2', '3', '3'}; //cout error, char array end without '\0'

// std::cout << "[3]{'2', '3', '3'}: " << z1 << std::endl;

char z2[4] = {'2', '\0', '3'};

std::cout << "[4]{'2', '/0', '3'}: " << z2 << std::endl;

std::cout << "test char with /0: "

<< "2" << '\0' << "33" << std::endl;

std::cout << "test string with /0:"

<< "a\0bb"

<< "2"

<< "\0"

<< "33" << std::endl;

}

void test_fstream()

{

std::cout << "\n# test_fstream()\n";

std::string filepath("tbd00/tbd00.txt");

{

std::ofstream fid(filepath, std::ios::binary);

fid << 2.33 << "\n";

fid.close();

}

double z0;

std::ifstream fid(filepath, std::ios::binary);

fid >> z0;

std::cout << "reading from " << filepath << std::endl;

std::cout << "double z0=" << z0 << std::endl;

}

// g++ draft_stream.cpp -std=c++11 -o tbd00.exe

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

{

std::cout << "# draft_stream.cpp" << std::endl;

test_endless_cin();

test_cout_char_array();

test_fstream();

std::cout << std::endl;

return 0;

}