Let me give you an example. Suppose google asks you to write a code to
add 2 numbers present in input file. It will make you download an
input.in file which will look like below when opened in notepad or
similar editors :
1 2
Also, once you solve the question you will be expected to upload the
output file and the source code. The output file will be expected to
look like this :
Case #1: 3
There are 2 ways to solve this. One is make your input and output
directly from/to the file. Second is do it from stdin/stdout and use
redirection operators to make it use the files instead. I prefer the
second one because its easier to test. For the first case, your code
will look like this. (I didn't try compiling them. hope my code works)
#include<fstream>
using namespace std;
int main()
{
ifstream fin("input.in");
ofstream fout("output.out");
int a,b,c;
fin>>a>>b;
c = a+b;
fout<<"Case #1: "<<c<<endl;
fin.close();
fout.close();
}
Compile the code using "g++ code.cpp". You will get an executable as
a.out in linux and a.exe in windows. Keep the input file (input.in) in
the same folder as this executable and run the executable ("a.exe" in
windows and "./a.out" in linux). This will give you the output file
output.out in the same folder.
For second option, in the previous code, replace fin by cin, fout by
cout, remove declarations of fin and fout, remove lines closing these
file handlers and use header file iostream instead of fstream. Compile
the code. When you run the executable now, it will expect input in the
terminal. You can put your sample inputs and test it. To run with
file, use command "a.exe < input.in > output.out" in windows and
"./a.out < input.in > output.out" in linux.
On 9 April 2010 14:05, paulsmithenator <[email protected]> wrote:
> How do you take any input in any of your programs?
>
> Paul Smith
>
> [email protected]
>
>
>
> On Fri, Apr 9, 2010 at 8:19 AM, dgcooldue <[email protected]> wrote:
>> but how do we use them seems to be the main question here......
>> We are confused how do we take them as input in our program..
>>
>> On Fri, Apr 9, 2010 at 3:20 AM, Luiz Gustavo Rocha Soares
>> <[email protected]> wrote:
>>>
>>> What each number means is described in the problem description.
>>> Luiz Gustavo Soares
>>> http://luizsoares.net
>>>
>>>
>>> On Thu, Apr 8, 2010 at 3:23 PM, sandy <tHe dAGgeR> <[email protected]>
>>> wrote:
>>>>
>>>> what to do with the numbers in the .in files????
>>>>
>>>> --
>>>> You received this message because you are subscribed to the Google Groups
>>>> "google-codejam" group.
>>>> To post to this group, send email to [email protected].
>>>> To unsubscribe from this group, send email to
>>>> [email protected].
>>>> For more options, visit this group at
>>>> http://groups.google.com/group/google-code?hl=en.
>>>
>>> --
>>> You received this message because you are subscribed to the Google Groups
>>> "google-codejam" group.
>>> To post to this group, send email to [email protected].
>>> To unsubscribe from this group, send email to
>>> [email protected].
>>> For more options, visit this group at
>>> http://groups.google.com/group/google-code?hl=en.
>>
>>
>>
>> --
>> With Regards,
>> Dipanshu Gupta
>>
>> --
>> You received this message because you are subscribed to the Google Groups
>> "google-codejam" group.
>> To post to this group, send email to [email protected].
>> To unsubscribe from this group, send email to
>> [email protected].
>> For more options, visit this group at
>> http://groups.google.com/group/google-code?hl=en.
>>
>
> --
> You received this message because you are subscribed to the Google Groups
> "google-codejam" group.
> To post to this group, send email to [email protected].
> To unsubscribe from this group, send email to
> [email protected].
> For more options, visit this group at
> http://groups.google.com/group/google-code?hl=en.
>
>
--
You received this message because you are subscribed to the Google Groups
"google-codejam" group.
To post to this group, send email to [email protected].
To unsubscribe from this group, send email to
[email protected].
For more options, visit this group at
http://groups.google.com/group/google-code?hl=en.
