函数-memset用法

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

int _tmain(int argc, _TCHAR* argv[])
{
	char array1[5] = "aaaa";
	memset(array1,'\0',5);  //
	std::cout<<array1<<std::endl; //0 0 0 0 0

	char array2[5] = "aaaa";
	memset(array2,'b',4);
	std::cout<<array2<<std::endl; //b b b b 0

	return 0;

}