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// Fig. 5.26: fig05_26.cpp
// Demonstrating an array of pointers to functions.
#include <iostream>
using std::cout;
using std::cin;
using std::endl;
// function prototypes
void function1( int );
void function2( int );
void function3( int );
int main()
{
// initialize array of 3 pointers to functions that each
// take an int argument and return void
void (*f[ 3 ])( int ) = { function1, function2, function3 };
int choice;
cout << "Enter a number between 0 and 2, 3 to end: ";
cin >> choice;
// process user's choice
while ( choice >= 0 && choice < 3 ) {
// invoke function at location choice in array f
// and pass choice as an argument
(*f[ choice ])( choice );
cout << "Enter a number between 0 and 2, 3 to end: ";
cin >> choice;
}
cout << "Program execution completed." << endl;
return 0; // indicates successful termination
} // end main
void function1( int a )
{
cout << "You entered " << a
<< " so function1 was called\n\n";
} // end function1
void function2( int b )
{
cout << "You entered " << b
<< " so function2 was called\n\n";
} // end function2
void function3( int c )
{
cout << "You entered " << c
<< " so function3 was called\n\n";
} // end function3
/**************************************************************************
* (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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