Problems with ifstream/ofstream

kornerr · 07-04-2005, 03:12 AM

Here's what I have:

Code:

#include<iostream>
#include<fstream>
#include<string>
using namespace std;

int main(int argc, char* argv[]){
    string input=argv[1];
    string output=input+"FILTERED";
    ifstream in(string(input));
    ofstream out(string(output));
    out<<"Hello, it works!!!";
}

Here's an error:

Code:

root@darkstar:/home/cpp# g++ -o filter filter.cpp
filter.cpp: In function `int main(int, char**)':
filter.cpp:11: error: invalid operands of types `std::ofstream
   ()(std::basic_string<char, std::char_traits<char>, std::allocator<char> >)'
   and `const char[19]' to binary `operator<<'

What should I do?

Thanks.

keefaz · 07-04-2005, 10:22 AM

Your using wrong type for ifstream and ofstream

try :

Code:

...
ifstream in(input.c_str());
ofstream out(output.c_str());
...

Also add return 0 at the end of the main() function
as you declared it as int main()

And may I suggest you to not test / make programs as root ?

kornerr · 07-04-2005, 11:31 AM

Thanks, keefaz, it works!