ProgramGuruTo check if a specific item is present in a vector in C++, you can use the std::find algorithm from the algorithm header.
In this example,
vec containing numeric elements.std::find algorithm from the algorithm header to search for the specified item.std::find returns an iterator pointing to the found element. We check if the iterator is not equal to the end iterator of the vector to determine if the item is present.#include <iostream>
#include <vector>
#include <algorithm>
int main() {
std::vector<int> vec = {1, 2, 3, 4, 5};
int item = 3;
auto it = std::find(vec.begin(), vec.end(), item);
bool result = it != vec.end();
std::cout << std::boolalpha << result << std::endl;
return 0;
}true
In this example,
vec containing string elements.std::find algorithm from the algorithm header to search for the specified item.std::find returns an iterator pointing to the found element. We check if the iterator is not equal to the end iterator of the vector to determine if the item is present.#include <iostream>
#include <vector>
#include <algorithm>
int main() {
std::vector<std::string> vec = {"apple", "banana", "cherry", "date"};
std::string item = "banana";
auto it = std::find(vec.begin(), vec.end(), item);
bool result = it != vec.end();
std::cout << std::boolalpha << result << std::endl;
return 0;
}true
In this tutorial, we learned How to check if a Specific Item is present in the Vector in C++ language with well detailed examples.