4elist0704.cpp

《21天学通C＋＋》附盘的原代码。书上的每个例子在这里都有相应的C语言程序。

// Listing 7.4
// Demonstrates break and continue

#include <iostream>

int main()
{
	using namespace std;
	unsigned short small;
	unsigned long  large;
	unsigned long  skip;
	unsigned long target;
	const unsigned short MAXSMALL=65535;

	cout << "Enter a small number: ";
	cin >> small;
	cout << "Enter a large number: ";
	cin >> large;
	cout << "Enter a skip number: ";
	cin >> skip;
	cout << "Enter a target number: ";
	cin >> target;

	cout << "\n";

	// set up 3 stop conditions for the loop
	while (small < large && large > 0 && small < MAXSMALL)

	{

		small++;

		if (small % skip == 0)  // skip the decrement?
		{
			cout << "skipping on " << small << endl;
			continue;
		}

		if (large == target)    // exact match for the target?
		{
			cout << "Target reached!";
			break;
		}

		large-=2;
	}                   // end of while loop

	cout << "\nSmall: " << small << " Large: " << large << endl;
	return 0;
}