operator== (set)
Tests if the set object on the left side of the operator is equal to the set object on the right side.
bool operator!==(
const set <Key, Traits, Allocator>& _Left,
const set <Key, Traits, Allocator>& _Right
);
Parameters
_Left
An object of type set._Right
An object of type set.
Return Value
true if the set on the left side of the operator is equal to the set on the right side of the operator; otherwise false.
Remarks
The comparison between set objects is based on a pairwise comparison of their elements. Two sets are equal if they have the same number of elements and their respective elements have the same values. Otherwise, they are unequal.
Example
// set_op_eq.cpp
// compile with: /EHsc
#include <set>
#include <iostream>
int main( )
{
using namespace std;
set <int> s1, s2, s3;
int i;
for ( i = 0 ; i < 3 ; i++ )
{
s1.insert ( i );
s2.insert ( i * i );
s3.insert ( i );
}
if ( s1 == s2 )
cout << "The sets s1 and s2 are equal." << endl;
else
cout << "The sets s1 and s2 are not equal." << endl;
if ( s1 == s3 )
cout << "The sets s1 and s3 are equal." << endl;
else
cout << "The sets s1 and s3 are not equal." << endl;
}
The sets s1 and s2 are not equal.
The sets s1 and s3 are equal.
Requirements
Header: <set>
Namespace: std