C
#i nclude <assert.h> //設定插入點
#i nclude <ctype.h> //字符處理
#i nclude <errno.h> //定義錯誤碼
#i nclude <float.h> //浮點數處理
#i nclude <iso646.h> //對應各種運算符的宏
#i nclude <limits.h> //定義各種數據類型最值的常量
#i nclude <locale.h> //定義本地化C函數
#i nclude <math.h> //定義數學函數
#i nclude <setjmp.h> //異常處理支持
#i nclude <signal.h> //信號機制支持
#i nclude <stdarg.h> //不定參數列表支持
#i nclude <stddef.h> //常用常量
#i nclude <stdio.h> //定義輸入/輸出函數
#i nclude <stdlib.h> //定義雜項函數及內存分配函數
#i nclude <string.h> //字符串處理
#i nclude <time.h> //定義關於時間的函數
#i nclude <wchar.h> //寬字符處理及輸入/輸出
#i nclude <wctype.h> //寬字符分類
傳統C++
#i nclude <fstream.h> //改用<fstream>
#i nclude <iomanip.h> //改用<iomainip>
#i nclude <iostream.h> //改用<iostream>
#i nclude <strstrea.h> //該類不再支持,改用<sstream>中的stringstream
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標准C++
#i nclude <algorithm> //STL 通用算法
#i nclude <bitset> //STL 位集容器
#i nclude <cctype> //字符處理
#i nclude <cerrno> //定義錯誤碼
#i nclude <cfloat> //浮點數處理
#i nclude <ciso646> //對應各種運算符的宏
#i nclude <climits> //定義各種數據類型最值的常量
#i nclude <clocale> //定義本地化函數
#i nclude <cmath> //定義數學函數
#i nclude <complex> //復數類
#i nclude <csignal> //信號機制支持
#i nclude <csetjmp> //異常處理支持
#i nclude <cstdarg> //不定參數列表支持
#i nclude <cstddef> //常用常量
#i nclude <cstdio> //定義輸入/輸出函數
#i nclude <cstdlib> //定義雜項函數及內存分配函數
#i nclude <cstring> //字符串處理
#i nclude <ctime> //定義關於時間的函數
#i nclude <cwchar> //寬字符處理及輸入/輸出
#i nclude <cwctype> //寬字符分類
#i nclude <deque> //STL 雙端隊列容器
#i nclude <exception> //異常處理類
#i nclude <fstream> //文件輸入/輸出
#i nclude <al> //STL 定義運算函數(代替運算符)
#i nclude <limits> //定義各種數據類型最值常量
#i nclude <list> //STL 線性列表容器
#i nclude <locale> //本地化特定信息
#i nclude <map> //STL 映射容器
#i nclude <memory> //STL通過分配器進行的內存分配
#i nclude <new> //動態內存分配
#i nclude <numeric> //STL常用的數字操作
#i nclude <iomanip> //參數化輸入/輸出
#i nclude <ios> //基本輸入/輸出支持
#i nclude <iosfwd> //輸入/輸出系統使用的前置聲明
#i nclude <iostream> //數據流輸入/輸出
#i nclude <istream> //基本輸入流
#i nclude <iterator> //STL迭代器
#i nclude <ostream> //基本輸出流
#i nclude <queue> //STL 隊列容器
#i nclude <set> //STL 集合容器
#i nclude <sstream> //基於字符串的流
#i nclude <stack> //STL 堆棧容器
#i nclude <stdexcept> //標准異常類
#i nclude <streambuf> //底層輸入/輸出支持
#i nclude <string> //字符串類
#i nclude <typeinfo> //運行期間類型信息
#i nclude <utility> //STL 通用模板類
#i nclude <valarray> //對包含值的數組的操作
#i nclude <vector> //STL 動態數組容器
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C99增加的部分
#i nclude <complex.h> //復數處理
#i nclude <fenv.h> //浮點環境
#i nclude <inttypes.h> //整數格式轉換
#i nclude <stdbool.h> //布爾環境
#i nclude <stdint.h> //整型環境
#i nclude <tgmath.h> //通用類型數學宏