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C++ Tutorial

C++ HOME C++ Intro C++ Get Started C++ Syntax
Syntax Statements Code Challenge
C++ Output
Print Text Print Numbers New Lines Code Challenge
C++ Comments C++ Variables
Declare Variables Multiple Variables Identifiers Constants Real-Life Examples Code Challenge
C++ User Input C++ Data Types
Basic Data Types Numbers Decimal Precision Booleans Characters Strings The auto Keyword Real-Life Example Code Challenge
C++ Operators
Operators Arithmetic Assignment Comparison Logical Precedence Code Challenge
C++ Type Conversion C++ Strings
Strings Intro Concatenation Numbers and Strings String Length Access Strings Special Characters User Input Strings Omitting Namespace C-Style Strings Convert Strings Code Challenge
C++ Math C++ Booleans
Boolean Values Boolean Expressions Real-Life Example Code Challenge
C++ If...Else
if else else if Short hand if..else Nested if Logical Operators Real-Life Examples Code Challenge
C++ Switch
Switch Code Challenge
C++ While Loop
While Loop Do/While Loop Real-Life Examples Code Challenge
C++ For Loop
For Loop Nested Loops The foreach Loop Real-Life Examples Code Challenge
C++ Break/Continue C++ Arrays
Arrays Arrays and Loops Omit Array Size Get Array Size Real-Life Example Multidimensional Arrays Code Challenge
C++ Structures C++ Enums C++ References
Create References Memory Address
C++ Pointers
Create Pointers Dereferencing Modify Pointers
C++ Memory Mgmt
Memory Management new and delete Smart Pointers

C++ Functions

C++ Functions C++ Function Parameters
Parameters/Arguments Default Parameter Multiple Parameters Return Values Pass By Reference Pass Arrays Pass Structures Real-Life Example
C++ Function Overloading C++ Scope C++ Recursion C++ Lambda

C++ Classes

C++ OOP C++ Classes/Objects C++ Class Methods C++ Constructors
Constructors Constructor Overloading
C++ Destructors C++ The this Pointer C++ Access Specifiers C++ Encapsulation C++ Friend Functions C++ Inheritance
Inheritance Multilevel Inheritance Multiple Inheritance Access Specifiers
C++ Polymorphism
Polymorphism Virtual Functions Abstract Classes
C++ Operator Overload C++ Templates

C++ Files

C++ Files

C++ Date

C++ Date

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C++ Errors C++ Debugging C++ Exceptions C++ Input Validation

C++ Problem Solving

C++ Problem Solving C++ Build the Logic C++ Test Cases

C++ Projects

C++ Projects

C++ Data Structures

C++ Data Structures & STL C++ Vectors C++ List C++ Stacks C++ Queues C++ Deque C++ Sets C++ Maps C++ Unordered Map C++ Unordered Set C++ Iterators C++ Algorithms

C++ Namespaces

C++ Namespaces

C++ Cert

C++ Certificate

C++ How To

C++ How Tos
How Tos Add Two Numbers Swap Two Variables Even or Odd Number Reverse a Number Positive or Negative Square Root Area of Rectangle Celsius to Fahrenheit Sum of Digits Armstrong Number Random Number Count Words Count Vowels in a String Remove Vowels Count Digits in a String Reverse a String Palindrome Check Check Anagram Split a String Remove Whitespace Count Character Frequency Sum of Array Elements Find Array Average Sort an Array Find Smallest Element Find Largest Element Second Largest Array Min and Max in Array Merge Two Arrays Remove Duplicates Find Duplicates Shuffle an Array Factorial of a Number Fibonacci Sequence Find GCD Check Prime Number Loop Through a Vector Loop Through a Map

C++ Examples

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C++ Reference

C++ Reference C++ Keywords
alignas alignof and and_eq asm auto bitand bitor bool break case catch char char16_t char32_t class compl const const_cast constexpr continue decltype default delete do double dynamic_cast else enum explicit export extern false final float for friend goto if inline int long mutable namespace new noexcept not not_eq nullptr operator or or_eq override private protected public register reinterpret_cast return short signed sizeof static static_assert static_cast struct switch template this thread_local throw true try typedef typeid typename union unsigned using virtual void volatile wchar_t while xor xor_eq
C++ <algorithm>
adjacent_find() all_of() any_of() binary_search() copy() count() count_if() fill() find() find_first_of() find_if() find_if_not() for_each() includes() is_permutation() is_sorted() is_sorted_until() lower_bound() max_element() merge() min_element() none_of() random_shuffle() replace() replace_copy() replace_copy_if() replace_if() reverse() reverse_copy() search() sort() swap() swap_ranges() upper_bound()
C++ <cctype>
isalnum() isalpha() isblank() iscntrl() isdigit() isgraph() islower() isprint() ispunct() isspace() isupper() isxdigit() tolower() toupper()
C++ <cmath>
abs(x) acos(x) acosh(x) asin(x) asinh(x) atan(x) atan2(y, x) atanh(x) cbrt(x) ceil(x) copysign(x, y) cos(x) cosh(x) exp(x) exp2(x) expm1(x) erf(x) erfc(x) fabs(x) fdim(x, y) floor(x) fma(x, y, z) fmax(x, y) fmin(x, y) fmod(x, y) frexp(x, y) hypot(x, y) ilogb(x) ldexp(x, y) lgamma(x) llrint(x) llround(x) log(x) log10(x) log1p(x) log2(x) logb(x) lrint(x) lround(x) modf(x, y) nan(s) nearbyint(x) nextafter(x, y) nexttoward(x, y) pow(x, y) remainder(x, y) remquo(x, y, z) rint(x) round(x) scalbln(x, y) scalbn(x, y) sin(x) sinh(x) sqrt(x) tan(x) tanh(x) tgamma(x) trunc(x)
C++ <cstdlib>
abs() atof() atoi() atol() div() exit() rand() srand()
C++ <cstring>
memchr() memcmp() memcpy() memmove() memset() strcat() strchr() strcmp() strcoll() strcpy() strcspn() strerror() strlen() strncat() strncmp() strncpy() strpbrk() strrchr() strspn() strstr() strtok() strxfrm()
C++ <ctime>
asctime() clock() ctime() difftime() gmtime() localtime() mktime() strftime() time()
C++ <deque>
assign() at() back() begin() clear() empty() end() erase() front() insert() pop_back() pop_front() push_back() push_front() resize() size() swap()
C++ <fstream>
filebuf fstream ifstream ofstream
C++ <iomanip>
setprecision() setw() setfill() setbase() setiosflags() resetiosflags() put_time() get_time() fixed scientific left right showpoint boolalpha
C++ <iostream>
cerr clog cin cout wcerr wclog wcin wcout
C++ <list>
back() begin() clear() empty() end() erase() front() insert() merge() pop_back() pop_front() push_back() push_front() remove() reverse() size() sort() unique()
C++ <map>
at() begin() clear() count() emplace() empty() end() erase() find() insert() lower_bound() rbegin() rend() size() swap() upper_bound()
C++ <memory>
unique_ptr shared_ptr weak_ptr make_shared() get() reset() release() use_count() lock() expired()
C++ <queue>
back() empty() front() pop() push() size() swap()
C++ <random>
random_device default_random_engine mt19937 uniform_int_distribution uniform_real_distribution normal_distribution bernoulli_distribution
C++ <set>
begin() clear() count() emplace() empty() end() erase() find() insert() lower_bound() rbegin() rend() size() swap() upper_bound()
C++ <sstream>
stringstream istringstream ostringstream str()
C++ <stack>
empty() pop() push() size() swap() top()
C++ <stdexcept>
logic_error domain_error invalid_argument length_error out_of_range runtime_error overflow_error range_error underflow_error exception what()
C++ <string>
append() at() back() begin() c_str() clear() compare() copy() data() empty() end() erase() find() front() insert() length() max_size() operator[] pop_back() push_back() replace() rfind() resize() size() substr() swap()
C++ <unordered_map>
at() begin() bucket_count() clear() count() emplace() empty() end() erase() find() insert() load_factor() operator[] reserve() size() swap()
C++ <unordered_set>
begin() bucket_count() clear() count() emplace() empty() end() erase() find() insert() load_factor() reserve() size() swap()
C++ <vector>
assign() at() back() begin() capacity() clear() data() empty() end() erase() front() insert() max_size() pop_back() push_back() rbegin() rend() reserve() resize() shrink_to_fit() size() swap()



C++ export Keyword

❮ Previous C++ Keyword Reference Next ❯

Definition and Usage

The export keyword is reserved in C++11. This means that you cannot use it as a name for a variable or function, but it is not used for anything.

Older C++ (C++98) used export for templates, but very few compilers supported it. C++11 removed this use, and kept only the reserved word.

C++20 gives export a new meaning. It is used with modules (a newer way to split a program into parts), to choose which names a module shares with other files.

Related Pages

Read more about names that you cannot use in our C++ Identifiers Tutorial.

❮ Previous C++ Keyword Reference Next ❯
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