proj3_04.cpp

C++程序设计教程的全部源代码 包含与教程同步的PPT 方便学习

#include <iostream.h>
void main()
{
	const double * dp;
	double dVal1 = 123.456;
	double dVal2 =234.234;
	dp = &dVal1;
	//*dp = 789.012;   //错误，该地址的值不能改变
	dp =&dVal2;     //正确，对指针重新赋值
	cout << *dp << endl;
}