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<stack> 運算子

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operator!=

測試運算子左邊的 stack 物件是否不等於右邊的 stack 物件。

bool operator!=(const stack <Type, Container>& left, const stack <Type, Container>& right,);

參數

left
stack 類型的物件。

right
stack 類型的物件。

傳回值

true 如果堆疊或堆疊不相等，則為 ; false 如果堆疊或堆疊相等，則為 。

備註

stack 物件之間的比較是以其項目的成對比較為基礎。 如果兩個 stack 具有相同的項目數，且其個別項目的值相同，則它們會相等。 反之則為不相等。

範例

// stack_op_me.cpp
// compile with: /EHsc
#include <stack>
#include <vector>
#include <iostream>

int main( )
{
   using namespace std;

   // Declares stacks with vector base containers
   stack <int, vector<int> > s1, s2, s3;

   // The following would have cause an error because stacks with
   // different base containers are not equality comparable
   // stack <int, list<int> >  s3;

   s1.push( 1 );
   s2.push( 2 );
   s3.push( 1 );

   if ( s1 != s2 )
      cout << "The stacks s1 and s2 are not equal." << endl;
   else
      cout << "The stacks s1 and s2 are equal." << endl;

   if ( s1 != s3 )
      cout << "The stacks s1 and s3 are not equal." << endl;
   else
      cout << "The stacks s1 and s3 are equal." << endl;
}

The stacks s1 and s2 are not equal.
The stacks s1 and s3 are equal.

operator<

測試運算子左邊的堆疊物件是否小於右邊的堆疊物件。

bool operator<(const stack <Type, Container>& left, const stack <Type, Container>& right);

參數

left
stack 類型的物件。

right
stack 類型的物件。

傳回值

true 如果運算子左邊的堆疊小於且不等於運算子右邊的堆疊，則為 ;否則 false為 。

備註

stack 物件之間的比較是以其項目的成對比較為基礎。 兩個 stack 物件之間的小於關聯性，是以第一對不相等項目的比較為根據。

範例

// stack_op_lt.cpp
// compile with: /EHsc
#include <stack>
#include <list>
#include <iostream>

int main( )
{
   using namespace std;

   // Declares stacks with list base container
   stack <int, list<int> > s1, s2, s3;

   s1.push( 2 );
   s1.push( 4 );
   s1.push( 6 );
   s1.push( 8 );
   s2.push( 5 );
   s2.push( 10 );
   s3.push( 2 );
   s3.push( 4 );
   s3.push( 6 );
   s3.push( 8 );

   if ( s1 >= s2 )
      cout << "The stack s1 is greater than or equal to "
           << "the stack s2." << endl;
   else
      cout << "The stack s1 is less than "
           << "the stack s2." << endl;

   if ( s1>= s3 )
      cout << "The stack s1 is greater than or equal to "
           << "the stack s3." << endl;
   else
      cout << "The stack s1 is less than "
           << "the stack s3." << endl;

   // to print out the stack s1 ( by unstacking the elements):
   stack <int>::size_type i_size_s1 = s1.size( );
   cout << "The stack s1 from the top down is: ( ";
   unsigned int i;
   for ( i = 1 ; i <= i_size_s1 ; i++ )
   {
      cout << s1.top( ) << " ";
      s1.pop( );
   }
   cout << ")." << endl;
}

The stack s1 is less than the stack s2.
The stack s1 is greater than or equal to the stack s3.
The stack s1 from the top down is: ( 8 6 4 2 ).

operator<=

測試運算子左邊的堆疊物件是否小於或等於右邊的堆疊物件。

bool operator<=(const stack <Type, Container>& left, const stack <Type, Container>& right);

參數

left
stack 類型的物件。

right
stack 類型的物件。

傳回值

true 如果運算子左邊的堆疊小於或等於運算子右邊的堆疊，則為 ;否則 false為 。

備註

stack 物件之間的比較是以其項目的成對比較為基礎。 兩個 stack 物件之間的小於或等於關聯性，是以第一對不相等項目的比較為根據。

範例

// stack_op_le.cpp
// compile with: /EHsc
#include <stack>
#include <iostream>

int main( )
{
   using namespace std;

   // Declares stacks with default deque base container
   stack <int> s1, s2, s3;

   s1.push( 5 );
   s1.push( 10 );
   s2.push( 1 );
   s2.push( 2 );
   s3.push( 5 );
   s3.push( 10 );

   if ( s1 <= s2 )
      cout << "The stack s1 is less than or equal to "
           << "the stack s2." << endl;
   else
      cout << "The stack s1 is greater than "
           << "the stack s2." << endl;

   if ( s1 <= s3 )
      cout << "The stack s1 is less than or equal to "
           << "the stack s3." << endl;
   else
      cout << "The stack s1 is greater than "
           << "the stack s3." << endl;
}

The stack s1 is greater than the stack s2.
The stack s1 is less than or equal to the stack s3.

operator==

測試運算子左邊的 stack 物件是否等於右邊的 stack 物件。

bool operator==(const stack <Type, Container>& left, const stack <Type, Container>& right);

參數

left
stack 類型的物件。

right
stack 類型的物件。

傳回值

true 如果堆疊或堆疊相等，則為 ; false 如果堆疊或堆疊不相等，則為 。

備註

stack 物件之間的比較是以其項目的成對比較為基礎。 如果兩個 stack 具有相同的項目數，且其個別項目的值相同，則它們會相等。 反之則為不相等。

範例

// stack_op_eq.cpp
// compile with: /EHsc
#include <stack>
#include <vector>
#include <iostream>

int main( )
{
   using namespace std;

   // Declares stacks with vector base containers
   stack <int, vector<int> > s1, s2, s3;

   // The following would have cause an error because stacks with
   // different base containers are not equality comparable
   // stack <int, list<int> > s3;

   s1.push( 1 );
   s2.push( 2 );
   s3.push( 1 );

   if ( s1 == s2 )
      cout << "The stacks s1 and s2 are equal." << endl;
   else
      cout << "The stacks s1 and s2 are not equal." << endl;

   if ( s1 == s3 )
      cout << "The stacks s1 and s3 are equal." << endl;
   else
      cout << "The stacks s1 and s3 are not equal." << endl;
}

The stacks s1 and s2 are not equal.
The stacks s1 and s3 are equal.

operator>

測試運算子左邊的堆疊物件是否大於右邊的堆疊物件。

bool operator>(const stack <Type, Container>& left, const stack <Type, Container>& right);

參數

left
stack 類型的物件。

right
stack 類型的物件。

傳回值

true 如果運算子左邊的堆疊大於且不等於運算子右邊的堆疊，則為 ;否則 false為 。

備註

stack 物件之間的比較是以其項目的成對比較為基礎。 兩個 stack 物件之間的大於關聯性，是以第一對不相等項目的比較為根據。

範例

// stack_op_gt.cpp
// compile with: /EHsc
#include <stack>
#include <list>
#include <iostream>

int main( )
{
   using namespace std;

   // Declares stacks with list base container
   stack <int, list<int> > s1, s2, s3;

   s1.push( 1 );
   s1.push( 2 );
   s1.push( 3 );
   s2.push( 5 );
   s2.push( 10 );
   s3.push( 1 );
   s3.push( 2 );

   if ( s1 > s2 )
      cout << "The stack s1 is greater than "
           << "the stack s2." << endl;
   else
      cout << "The stack s1 is not greater than "
           << "the stack s2." << endl;

   if ( s1> s3 )
      cout << "The stack s1 is greater than "
           << "the stack s3." << endl;
   else
      cout << "The stack s1 is not greater than "
           << "the stack s3." << endl;
}

The stack s1 is not greater than the stack s2.
The stack s1 is greater than the stack s3.

operator>=

測試運算子左邊的堆疊物件是否大於或等於右邊的堆疊物件。

bool operator>=(const stack <Type, Container>& left, const stack <Type, Container>& right);

參數

left
stack 類型的物件。

right
stack 類型的物件。

傳回值

true 如果運算子左邊的堆疊嚴格小於運算子右邊的堆疊，則為 ;否則 false為 。

備註

stack 物件之間的比較是以其項目的成對比較為基礎。 兩個 stack 物件之間的大於或等於關聯性，是以第一對不相等項目的比較為根據。

範例

// stack_op_ge.cpp
// compile with: /EHsc
#include <stack>
#include <list>
#include <iostream>

int main( )
{
   using namespace std;

   // Declares stacks with list base container
   stack <int, list<int> > s1, s2, s3;

   s1.push( 1 );
   s1.push( 2 );
   s2.push( 5 );
   s2.push( 10 );
   s3.push( 1 );
   s3.push( 2 );

   if ( s1 >= s2 )
      cout << "The stack s1 is greater than or equal to "
           << "the stack s2." << endl;
   else
      cout << "The stack s1 is less than "
           << "the stack s2." << endl;

   if ( s1>= s3 )
      cout << "The stack s1 is greater than or equal to "
           << "the stack s3." << endl;
   else
      cout << "The stack s1 is less than "
           << "the stack s3." << endl;
}

The stack s1 is less than the stack s2.
The stack s1 is greater than or equal to the stack s3.