ProgramGuruTo create an empty vector in C++, you can use the std::vector class from the Standard Template Library (STL).
In this example,
std::vector class.std::vector declaration to define a vector that will hold integers.empty_vector and initialize it using the default constructor, which creates an empty vector.size() member function to confirm that it is empty. The size() function returns the number of elements in the vector.std::cout to output the size of the vector to the console.#include <vector>
#include <iostream>
int main() {
std::vector<int> empty_vector;
std::cout << "Size of empty vector: " << empty_vector.size() << std::endl;
return 0;
}Size of empty vector: 0
In this example,
std::vector class, and the std::string class.std::vector declaration to define a vector that will hold strings.empty_string_vector and initialize it using the default constructor, which creates an empty vector.size() member function to confirm that it is empty. The size() function returns the number of elements in the vector.std::cout to output the size of the vector to the console.#include <vector>
#include <string>
#include <iostream>
int main() {
std::vector<std::string> empty_string_vector;
std::cout << "Size of empty string vector: " << empty_string_vector.size() << std::endl;
return 0;
}Size of empty string vector: 0
In this tutorial, we learned How to create an Empty Vector in C++ language with well detailed examples.