How to check if Two Sets are Equal in C++

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How to check if Two Sets are Equal in C++ ?

Answer

To check if two sets are equal in C++, you can use the '==' operator to compare them element-wise.

✐ Examples

1 Check Equality of Two Sets

In this example,

We define two sets, set1 and set2, containing elements of the sets.
We use the '==' operator to compare the sets for equality.
If the two sets contain the same elements, the '==' operator returns 'true'; otherwise, it returns 'false'.

C++ Program

#include <iostream>
#include <set>

int main() {
    std::set<int> set1 = {1, 2, 3, 4};
    std::set<int> set2 = {1, 2, 3, 4};
    
    bool areEqual = (set1 == set2);
    
    std::cout << std::boolalpha << areEqual;
    
    return 0;
}

Output

true

2 Check Equality of Unequal Sets

In this example,

We define two sets, set1 and set2, containing elements of the sets.
We use the '==' operator to compare the sets for equality.
If the two sets contain different elements or have a different number of elements, the '==' operator returns 'false'.

C++ Program

#include <iostream>
#include <set>

int main() {
    std::set<int> set1 = {1, 2, 3, 4};
    std::set<int> set2 = {4, 3, 2, 1};
    
    bool areEqual = (set1 == set2);
    
    std::cout << std::boolalpha << areEqual;
    
    return 0;
}

Output

false

Summary

In this tutorial, we learned How to check if Two Sets are Equal in C++ language with well detailed examples.

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How to check if Two Sets are Equal in C++

How to check if Two Sets are Equal in C++ ?

Answer

✐ Examples

1 Check Equality of Two Sets

C++ Program

Output

2 Check Equality of Unequal Sets

C++ Program

Output

Summary

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