problem solved but is not accepted.

Hi there. I'm trying to solve this problem :
http://acm.uva.es/p/v111/11172.html
So i wrote this:

Code:

---

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

int main()
{
        int pairs;
        int i, first, second;
        char pFirst[80], pSecond[80];
        char buffer[80];
    char szFile[80];

        cout << "Give the name of the file : " << endl;
        cin >> szFile;
        ifstream my_file(szFile);
    if(!my_file) {cerr<<"No such file"<<endl;getchar();exit(1);}
        my_file.getline(buffer,80);

        pairs=atoi(buffer);

        for(i=0;i<pairs;i++)
        {
                my_file.getline(pFirst,80,' ');
                my_file.getline(pSecond,80);

                first = atoi(pFirst);
                second = atoi(pSecond);

                if(first>second) cout << '>' << endl;
                else if(first<second) cout << '<' << endl;
                else cout << '=' << endl;
        }
   
    cin.get();
    return 0;
}

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My code works fine (shows the correct results) both in VS 2005 and dev-C++. But, when I submited it to the uva, it was not accepted( had runtime or compilation error)

The weird thing about this problem is that although it needs to load a file as input,
(in uva) I am asked to upload only my code....

It's the first time I upload a code there and I'm a bit fuzzed. Can you please help me?

Well the final cin.get(); is inappropriate for a non-interactive test.

At the top of the page it specifies the input is coming from the standard input. Wouldn't that mean that the file is piped to your resulting executable? That is, interactive input for the name of the input file is not something you'd want to do?

[edit]That is, the output of your code might be this:

Quote:

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D:\scratch>cppapp < file.txt
Give the name of the file :
No such file

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Quote:

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Originally Posted by Dave_Sinkula

Wouldn't that mean that the file is piped to your resulting executable? That is, interactive input for the name of the input file is not something you'd want to do?

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OK, if I understand right you mean , sth like this...

Code:

---

int main(int argc, char** argv);
{
....
ifstream my_file(argv[1]);
....
}

---

Like the text on the question page says

Quote:

---

Originally Posted by question

Problem H
Relational Operators
Input: Standard Input
Output: Standard Output

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It means the online test is going to do this
gcc yourcode.c
./a.out < testfile > testresult
diff testresult expectedresult

If the result of the diff command is no differences, you pass, otherwise you fail.

So everything you read should be from cin, and all output goes to cout.