字符串反转C++实现源码（带测试用例）

将字符串字符顺序反转：

#include <iostream>
using namespace std;

void Reverse( char *pBegin, char *pEnd )
{
	if( pBegin == NULL || pEnd == NULL )
		return;

	while( pBegin < pEnd )
	{
		char tmp = *pBegin;
		*pBegin = *pEnd;
		*pEnd = tmp;

		pBegin++, pEnd--;
	}
}

void Test( char *testName, char *input, char *expectedResult )
{
	if( testName != NULL)
		cout << testName << " begins: " << endl;

	if( input == NULL )
		return;

	char *pBegin = input;

	char *pEnd = input; //暂时
	while( *pEnd != '\0' )
		pEnd++;
	//pEnd此时已经指向'\0'了，退一个，指向最后一个字母
	pEnd--;
	//另外一种方法得到pEnd
	//pEnd = pEnd + strlen(input) - 1;

	cout << "反转前：" << input << endl;
	Reverse( pBegin, pEnd );
	cout << "反转后：" << input << endl;

	if( (input == NULL