"Cannot open the file"! Why?

[yezilin]

void main()
{
string infile;
ifstream in(infile.c_str());
if(!in)
{
cout<<"Cannot open the file"<<endl;
}
else
cout<<"got it"<<endl;
}
结果输出 "Cannot open the file" 为什么呢？请指教！

[cnvb]

因为你的infile变量什么也没有...

[iatsbg]

string infile;
要换成
string infile="c:\\abc.txt";//换成你要打开的文件的名称

[gfxiang]

#include <iostream>
#include <fstream>
#include <string>

using namespace std;

int main()
{
string infile;
cout << "Enter input file name:"
cin >> infile;

ifstream in(infile.c_str());
if(!in)
cout <<"Cannot open the file: " << infile <<endl;
else
cout << "got it" <<endl;

in.close();

return 0;
}

[yezilin]

Thank you very much. I really got it now.
我以为infile就是文件名呢！呵呵!