How can I use “#include ”?

In the context of competitive programming development, the feature of “#include ” is mainly a shortcut for including the entire standardized library in the C++ programming language. It is very useful and beneficial as it saves time by using the technique of commonly used headers such as , , , etc., all at once.

Here is the example given of how you use this feature in Java programming language:-

#include 
Using namespace std;
Int main() {
    Vector numbers = {4, 2, 7, 1, 5};
    // Sorting the vector using sort() from 
    Sort(numbers.begin(), numbers.end());
    // Iterating through the sorted vector
    For (int num : numbers) {
        Cout << num>

In the above example, the feature of “#include ” acts as a saving guard from headers like , , , , etc.