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how to open a file after running the program

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rajatC

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Re: how to open a file after running the program

#11

Jan 6th, 2008

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Originally Posted by Narue

>Of course the user could always use Notepad to view the file.
Oddly enough, my test call for that function was:
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showFile ( "notepad.exe", "C:\\narue_is_kewl.txt" );
showFile ( "notepad.exe", "C:\\narue_is_kewl.txt" );

thanks for the help...all that you told me is working fine....

now i have another problem...i want to open file with some other programs...like MS word,MS excel etc...

so what should be the program name (eg notepad.exe) for them....how can i find the exact name for all the text reading programs in my laptop..(wordpad,MS excel,MS access,MS word etc..)

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iamthwee

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Re: how to open a file after running the program

#12

Jan 6th, 2008

Reading and writing stuff from MS Office is a lot more difficult.

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Re: how to open a file after running the program

#13

Jan 6th, 2008

yeah i know that....i am trying to learn that also..
here just tell me how to open a file in excel or word through program..

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Re: how to open a file after running the program

#14

Jan 6th, 2008

So you just want to open it.

Then I guess the easiest, although not necessarily the best way, would be to call it from system.

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 C++ Syntax (Toggle Plain Text) 
#include <iostream>
using namespace std;
 
int main()
{
   system("C:/test.xls"); //path to excel file
}
#include <iostream>
using namespace std;

int main()
{
   system("C:/test.xls"); //path to excel file
}

Last edited by iamthwee; Jan 6th, 2008 at 7:19 am.

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Re: how to open a file after running the program

#15

Jan 6th, 2008

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Originally Posted by iamthwee

So you just want to open it.

Then I guess the easiest, although not necessarily the best way, would be to call it from system.
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C++ Syntax (Toggle Plain Text)
#include <iostream>
using namespace std;
 
int main()
  {
   system("C:/test.xls"); //path to excel file
}
#include <iostream> using namespace std; int main() { system("C:/test.xls"); //path to excel file }

i tried it..and it is working absolutely fine...my code is

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#include<iostream>
#include<fstream>
using namespace std;
int main()
{
    ofstream fout("excel.csv");
 
    int a[20];
    for(int i=0 ; i<20 ; i++)
    {
            srand(i);
            a[i]=rand()%100;
           fout<<a[i]<<",";
           if(i==10)
           fout<<"\n";
    }
   fout.close();
    system(("excel.csv"));
    return 0;
}
#include<iostream>
#include<fstream>
using namespace std;
int main()
{
    ofstream fout("excel.csv");
    
    int a[20];
    for(int i=0 ; i<20 ; i++)
    {
            srand(i);
            a[i]=rand()%100;
           fout<<a[i]<<",";
           if(i==10)
           fout<<"\n";
    }
   fout.close();
    system(("excel.csv"));
    return 0;
}

i know that excel files need to be saved in CSV format...(i learned it here in other thread) now as u can see that i have just mentioned the filename in system call...while you wrote the path of the file...
but my program is still working..the file is getting opened on running the program..but how?
my program is saved in F drive and i haven't mentioned the file path..but it is in the same folder where the program is saved...may be that's why it is working without filepath..please clearify!

and my other question is that it doesn't require the name of the program in which the file has to be opened..as Naure told me to write the name of the program (see older posts) for example notepad.exe ? So i think it opens the file in the default program attached to that particular format of file or extension..is it correct?

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iamthwee

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Re: how to open a file after running the program

#16

Jan 6th, 2008

Yeah, that sounds about right.

Btw your program is not generating random numbers properly.

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Re: how to open a file after running the program

#17

Jan 6th, 2008

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Originally Posted by iamthwee

Btw your program is not generating random numbers properly.

what do you mean by not properly?
are you talking about seed i ?? well i wrote this program just to learn about writing to excel and opening it...i used rand function to save myself from typing and initializing the array, nothing else.

I should have used the time seed instead to generate random numbers..
is it that what you want to say??

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Re: how to open a file after running the program

#18

Jan 6th, 2008

suggestions:
1. move line 10 srand() up above the loop. It should only be called once within the lifetime of the program. most people call it like this: srand( time(0) );
2. why do you need the array?

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