The any_of() function in C++ helps to determine if any of the elements in an array in the specified range satisfy the condition or not. This function is available in the <algorithm.h> header file.
The any_of() function accepts the following parameters:
first: This is an iterator that points to the first index of the array or vector where we want to perform this check.
last: This is an iterator that points to the last index of the array or vector where we want to perform this check.
condition: This is an unary function that accepts one element of the same type as elements you have in the array or vector. This unary function returns a Boolean value that indicates whether the condition is
The any_of() function returns a Boolean value true if any of the elements present in the array or vector in the specified range satisfy the condition; otherwise, it returns false.
Let’s look at the code now.
#include <iostream>#include <vector>#include <algorithm>using namespace std;bool IsAnyOdd(int i){return (i % 2 == 1);}int main() {vector<int> vec = {2,4,6,8,10,12,15,18,20};if (any_of(vec.begin(), vec.end(), IsAnyOdd))cout << "At least one number is odd.";elsecout << "All the elements are even.";return 0;}
true if the number is odd; otherwise, it will return false.any_of() function and pass the required parameters.