给你代码吧:
//文件起名为:std_lib_facilities.h,然后添加到你的项目中
/*
simple "Programming: Principles and Practice using C++" course header to
be used for the first few weeks.
It provides the most common standard headers (in the global namespace)
and minimal exception/error support.
Students: please don't try to understand the details of headers just yet.
All will be explained. This header is primarily used so that you don't have
to understand every concept all at once.
Revised April 25, 2010: simple_error() added
*/
#ifndef H112
#define H112 201004L
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
//------------------------------------------------------------------------------
#ifdef _MSC_VER
#include
using stdext::hash_map;
#else
#include
using __gnu_cxx::hash_map;
namespace __gnu_cxx {
template<> struct hash
{
size_t operator()(const std::string& s) const
{
return hash
}
};
} // of namespace __gnu_cxx
#endif
//------------------------------------------------------------------------------
#define unordered_map hash_map
//------------------------------------------------------------------------------
typedef long Unicode;
//------------------------------------------------------------------------------
using namespace std;
template
{
ostringstream os;
os << t;
return os.str();
}
struct Range_error : out_of_range { // enhanced vector range error reporting
int index;
Range_error(int i) :out_of_range("Range error: "+to_string(i)), index(i) { }
};
// trivially range-checked vector (no iterator checking):
template< class T> struct Vector : public std::vector
typedef typename std::vector
Vector() { }
explicit Vector(size_type n) :std::vector
Vector(size_type n, const T& v) :std::vector
template
Vector(I first, I last) :std::vector
T& operator[](unsigned int i) // rather than return at(i);
{
if (i<0||this->size()<=i) throw Range_error(i);
return std::vector
}
const T& operator[](unsigned int i) const
{
if (i<0||this->size()<=i) throw Range_error(i);
return std::vector
}
};
// disgusting macro hack to get a range checked vector:
#define vector Vector
// trivially range-checked string (no iterator checking):
struct String : std::string {
String() { }
String(const char* p) :std::string(p) {}
String(const string& s) :std::string(s) {}
template
String(int sz, char val) :std::string(sz,val) {}
template
char& operator[](unsigned int i) // rather than return at(i);
{
if (i<0||size()<=i) throw Range_error(i);
return std::string::operator[](i);
}
const char& operator[](unsigned int i) const
{
if (i<0||size()<=i) throw Range_error(i);
return std::string::operator[](i);
}
};
#ifndef _MSC_VER
namespace __gnu_cxx {
template<> struct hash
{
size_t operator()(const String& s) const
{
return hash
}
};
} // of namespace __gnu_cxx
#endif
struct Exit : runtime_error {
Exit(): runtime_error("Exit") {}
};
// error() simply disguises throws:
inline void error(const string& s)
{
throw runtime_error(s);
}
inline void error(const string& s, const string& s2)
{
error(s+s2);
}
inline void error(const string& s, int i)
{
ostringstream os;
os << s <<": " << i;
error(os.str());
}
#if _MSC_VER<1500
// disgusting macro hack to get a range checked string:
#define string String
// MS C++ 9.0 have a built-in assert for string range check
// and uses "std::string" in several places so that macro substitution fails
#endif
template
{
void* addr = &i; // get the address of the first byte
// of memory used to store the object
return static_cast
}
inline void keep_window_open()
{
cin.clear();
cout << "Please enter a character to exit\n";
char ch;
cin >> ch;
return;
}
inline void keep_window_open(string s)
{
if (s=="") return;
cin.clear();
cin.ignore(120,'\n');
for (;;) {
cout << "Please enter " << s << " to exit\n";
string ss;
while (cin >> ss && ss!=s)
cout << "Please enter " << s << " to exit\n";
return;
}
}
// error function to be used (only) until error() is introduced in Chapter 5:
inline void simple_error(string s) // write ``error: s�� and exit program
{
cerr << "error: " << s << '\n';
keep_window_open(); // for some Windows environments
exit(1);
}
// make std::min() and std::max() accessible:
#undef min
#undef max
#include
inline ios_base& general(ios_base& b) // to augment fixed and scientific
{
b.setf(ios_base::fmtflags(0),ios_base::floatfield);
return b;
}
// run-time checked narrowing cast (type conversion):
template
{
R r = R(a);
if (A(r)!=a) error(string("info loss"));
return r;
}
inline int randint(int max) { return rand()%max; }
inline int randint(int min, int max) { return randint(max-min)+min; }
inline double sqrt(int x) { return sqrt(double(x)); } // to match C++0x
#endif