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// Fig. 8.14: fig08_14.cpp
// Demonstrating standard library class vector.
#include <iostream>
using std::cout;
using std::cin;
using std::endl;
#include <iomanip>
using std::setw;
#include <vector>
using std::vector;
void outputVector( const vector< int > & );
void inputVector( vector< int > & );
int main()
{
vector< int > integers1( 7 ); // 7-element vector< int >
vector< int > integers2( 10 ); // 10-element vector< int >
// print integers1 size and contents
cout << "Size of vector integers1 is "
<< integers1.size()
<< "\nvector after initialization:\n";
outputVector( integers1 );
// print integers2 size and contents
cout << "\nSize of vector integers2 is "
<< integers2.size()
<< "\nvector after initialization:\n";
outputVector( integers2 );
// input and print integers1 and integers2
cout << "\nInput 17 integers:\n";
inputVector( integers1 );
inputVector( integers2 );
cout << "\nAfter input, the vectors contain:\n"
<< "integers1:\n";
outputVector( integers1 );
cout << "integers2:\n";
outputVector( integers2 );
// use overloaded inequality (!=) operator
cout << "\nEvaluating: integers1 != integers2\n";
if ( integers1 != integers2 )
cout << "integers1 and integers2 are not equal\n";
// create vector integers3 using integers1 as an
// initializer; print size and contents
vector< int > integers3( integers1 ); // copy constructor
cout << "\nSize of vector integers3 is "
<< integers3.size()
<< "\nvector after initialization:\n";
outputVector( integers3 );
// use overloaded assignment (=) operator
cout << "\nAssigning integers2 to integers1:\n";
integers1 = integers2;
cout << "integers1:\n";
outputVector( integers1 );
cout << "integers2:\n";
outputVector( integers1 );
// use overloaded equality (==) operator
cout << "\nEvaluating: integers1 == integers2\n";
if ( integers1 == integers2 )
cout << "integers1 and integers2 are equal\n";
// use overloaded subscript operator to create rvalue
cout << "\nintegers1[5] is " << integers1[ 5 ];
// use overloaded subscript operator to create lvalue
cout << "\n\nAssigning 1000 to integers1[5]\n";
integers1[ 5 ] = 1000;
cout << "integers1:\n";
outputVector( integers1 );
// attempt to use out of range subscript
cout << "\nAttempt to assign 1000 to integers1.at( 15 )"
<< endl;
integers1.at( 15 ) = 1000; // ERROR: out of range
return 0;
} // end main
// output vector contents
void outputVector( const vector< int > &array )
{
for ( int i = 0; i < array.size(); i++ ) {
cout << setw( 12 ) << array[ i ];
if ( ( i + 1 ) % 4 == 0 ) // 4 numbers per row of output
cout << endl;
} // end for
if ( i % 4 != 0 )
cout << endl;
} // end function outputVector
// input vector contents
void inputVector( vector< int > &array )
{
for ( int i = 0; i < array.size(); i++ )
cin >> array[ i ];
} // end function inputVector
/**************************************************************************
* (C) Copyright 1992-2003 by Deitel & Associates, Inc. and Prentice *
* Hall. All Rights Reserved. *
* *
* DISCLAIMER: The authors and publisher of this book have used their *
* best efforts in preparing the book. These efforts include the *
* development, research, and testing of the theories and programs *
* to determine their effectiveness. The authors and publisher make *
* no warranty of any kind, expressed or implied, with regard to these *
* programs or to the documentation contained in these books. The authors *
* and publisher shall not be liable in any event for incidental or *
* consequential damages in connection with, or arising out of, the *
* furnishing, performance, or use of these programs. *
*************************************************************************/
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