?? list1508.cpp
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// Listing 15.8 Without function pointers
#include <iostream>
using namespace std;
void Square (int&,int&);
void Cube (int&, int&);
void Swap (int&, int &);
void GetVals(int&, int&);
void PrintVals(void (*)(int&, int&),int&, int&);
int main()
{
int valOne=1, valTwo=2;
int choice;
bool fQuit = false;
void (*pFunc)(int&, int&);
while (fQuit == false)
{
cout << "(0)Quit (1)Change Values (2)Square (3)Cube (4)Swap: ";
cin >> choice;
switch (choice)
{
case 1: pFunc = GetVals; break;
case 2: pFunc = Square; break;
case 3: pFunc = Cube; break;
case 4: pFunc = Swap; break;
default: fQuit = true; break;
}
if (fQuit == false)
PrintVals ( pFunc, valOne, valTwo);
}
return 0;
}
void PrintVals( void (*pFunc)(int&, int&),int& x, int& y)
{
cout << "x: " << x << " y: " << y << endl;
pFunc(x,y);
cout << "x: " << x << " y: " << y << endl;
}
void Square (int & rX, int & rY)
{
rX *= rX;
rY *= rY;
}
void Cube (int & rX, int & rY)
{
int tmp;
tmp = rX;
rX *= rX;
rX = rX * tmp;
tmp = rY;
rY *= rY;
rY = rY * tmp;
}
void Swap(int & rX, int & rY)
{
int temp;
temp = rX;
rX = rY;
rY = temp;
}
void GetVals (int & rValOne, int & rValTwo)
{
cout << "New value for ValOne: ";
cin >> rValOne;
cout << "New value for ValTwo: ";
cin >> rValTwo;
}
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