libconfig

#include <libconfig.h++>
#include <iostream>

using namespace std;

void write_test()
{
  libconfig::Config cfg; //1.声明 Config对象  
  auto& root = cfg.getRoot();
  root.add("name", libconfig::Setting::TypeString);
  root.add("age", libconfig::Setting::TypeInt);
  root.add("address", libconfig::Setting::TypeString);
  root.add("weight", libconfig::Setting::TypeFloat);
  root.add("id", libconfig::Setting::TypeString);
  root["name"] = "jack";
  root["age"] = 22;
  root["address"] = "china";
  root["weight"] = 68.5;
  root["id"] = "kk123";
  cfg.writeFile("example.cfg");
}

void read_test()
{
  libconfig::Config cfg; //1.声明 Config对象  
  cfg.readFile("example.cfg");
  auto& root = cfg.getRoot();
  //set default value
  string name = "no name";
  int age = 22;
  double weight = 55.0;

  root.lookupValue("name", name);
  root.lookupValue("age", age);
  root.lookupValue("weight1", weight);

  cout << name << endl;
  cout << age << endl;
  cout << weight << endl;
}

int main()
{
  write_test();
  read_test();
  return 0;
}