How to Access Items in a Set in C++ - Step by Step Examples

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How to Access Items in a Set in C++ ?

Answer

In C++, you can access items in a set using iteration or specific methods provided by the set data structure.

✐ Examples

1 Access Items in a Set using Iteration

In this example,

We create a set named stringSet containing strings.
We use a for loop to iterate over the elements in the set and print each element.

C++ Program

#include <iostream>
#include <set>
#include <string>

int main() {
    std::set<std::string> stringSet = {"Apple", "Banana", "Orange", "Grapes"};
    
    for (const auto& item : stringSet) {
        std::cout << item << std::endl;
    }
    
    return 0;
}

Output

Apple
Banana
Orange
Grapes

2 Access Items in a Set using Specific Methods

In this example,

We create a set named numberSet containing integers.
We use the size() method to get the number of elements in the set.
We use the find() method to check if an item exists in the set.

C++ Program

#include <iostream>
#include <set>

int main() {
    std::set<int> numberSet = {1, 2, 3, 4};
    
    std::cout << "Number of elements: " << numberSet.size() << std::endl;
    std::cout << "Does set contain 3? " << (numberSet.find(3) != numberSet.end() ? "true" : "false") << std::endl;
    
    return 0;
}

Output

Number of elements: 4
Does set contain 3? true

Summary

In this tutorial, we learned How to Access Items in a Set in C++ language with well detailed examples.

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How to Access Items in a Set in C++ - Step by Step Examples

How to Access Items in a Set in C++ ?

Answer

✐ Examples

1 Access Items in a Set using Iteration

C++ Program

Output

2 Access Items in a Set using Specific Methods

C++ Program

Output

Summary

More C++ Sets Tutorials