C++ notes

qt_config

// qt confit in yosemite

Qt/5.3/clang_64/mkspecs

vim qdevice.pri: macosx10.10

string2integer.cpp

  /* string to integer: */

  // 1
  std::string myString = "45";
  int value = atoi(myString.c_str()); //value = 45
  
  // 2
  ifastream<basic_formatters, string_reader> myString(&string);
  int value;
  myString >> value;
  
  // 3
  #include <sstream>
  #include <string>
  using namespace std;
  
  string myStream = "45";
  istringstream buffer(myString);
  int value;
  buffer >> value;   // value = 45