linux与windows回车换行问题

#define MAX_LENGTH 15536
#include 
#include 
using namespace std;
string delEnter(const string src) // 过滤掉串中的回车换行符
{
string des;
for(int i = 0; i < src.length(); i++)
{
char tempChar = src[i];
if( tempChar!=10 && tempChar!=13)
des.append(1,tempChar);
} 
return des;
} 
int main()
{
char html[MAX_LENGTH] = "";
FILE *fp = fopen("Linux.txt", "rb"); //FILE *fp = fopen("Windows.txt", "rb");
char buf[16384];
while (fgets(buf, 16384, fp))
strcat(html, buf);
strcat(html,"\0");
string s(html);
cout << "string is: " << s << endl;;
cout << "The size of string is: " << s.length() << endl;
cout << "after del string is: " << delEnter(s) << endl;
cout << "The size of string is: " << delEnter(s).length() << endl;
fclose(fp);
return 0;
}

FILE *fp = fopen("Linux.txt", "rb");
不能写成：
FILE *fp = fopen("Linux.txt", "r");