main.cpp

来自「很好的 关于C++的例子 我想你要是可以把上面的例子都做好了 看明白了 关于函数」· C++ 代码 · 共 36 行

#include <iostream.h>
#include "malloc.h"

int *pPointer;

void SomeFunction()
{
	int nNumber;
	nNumber = 25; 


	//让指针指向nNumber:
	pPointer = &nNumber;
}

void main()
{
	SomeFunction(); //为pPointer赋值

	//为什么这里失败了?为什么没有得到25
	cout<<"Value of *pPointer: "<<*pPointer<<endl;
	*pPointer=1;
	cout<<"Value of *pPointer: "<<*pPointer<<endl;

	char *p,*q;
	p=(char*)malloc(1);
	*p=2;
	cout<<"Value of *p: "<<*p<<endl;
	free(p);
	q=(char*)malloc(1);
	*q=6;
	cout<<"Value of *p: "<<*p<<endl;
	cout<<"Value of *q: "<<*q<<endl;
	free(q);
}