调用流类带参数的构造函数打开文件（P307）

#include <iostream>
#include <fstream>
using namespace std;
int main()
{
ifstream inFile("c:\\tmp\\test.txt",ios::in); //声明对象inFile并调用构造函数
if(inFile)
{
cout<<"成功打开文件：c:\\tmp\\test.txt\n";
inFile.close();
}
else
cout<<"打开文件失败：c:\\tmp\\test.xt\n";
ofstream outFile("test2.txt",ios::out); //声明对象outFile并调用构造函数
if(!outFile)
cout<<"error1"<<endl;
else
{
cout<<"成功打开文件：test1.txt\n";
outFile.close();
}
fstream outFile2("tmp\\test2.txt",ios::out|ios::in); //声明对象outFile2并调用构造函数
if(outFile)
{
cout<<"成功打开文件：tmp\\test2.txt\n";
outFile.close();
}
else
cout<<"error2"<<endl;
return 0;
}