operator!= (set)
Tests if the set object on the left side of the operator is not 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 sets are not equal; false if sets are equal.
Remarks
The comparison between set objects is based on a pairwise comparison between 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_ne.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 not equal." << endl;
else
cout << "The sets s1 and s2 are equal." << endl;
if ( s1 != s3 )
cout << "The sets s1 and s3 are not equal." << endl;
else
cout << "The sets s1 and s3 are equal." << endl;
}
The sets s1 and s2 are not equal.
The sets s1 and s3 are equal.
Requirements
Header: <set>
Namespace: std