file handeling

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Join Date: Oct 2007

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pdwivedi

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file handeling

Nov 3rd, 2007

I want to open a text file in a c program which is on desktop.How can I print the texts written in the file on screen.Please help

Regards
Prashant

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Join Date: May 2007

Location: Ireland

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twomers

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Re: file handeling

Nov 3rd, 2007

Simple file io. First hit on google - http://www.cprogramming.com/tutorial/cfileio.html. All you need to do is point the file pointer to your desktop. You can hard code that if you want. Then open the file for reading (see link), and print its contents to screen.

Last edited by twomers : Nov 3rd, 2007 at 8:36 am.

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pdwivedi

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Re: file handeling

Nov 3rd, 2007

i tried to create a simple test program bu it could not print the contents of the file myfile.txt.
please help!

 Help with Code Tags 
 c Syntax (Toggle Plain Text) 
#include<stdio.h>
int main()
{
    FILE *fp;
    fp=fopen("C:\\Documents and Settings\\Administrator\\Desktop\\myfile.txt", "w");
    fprintf(fp, "Testing...\n");
    getch();
}
#include<stdio.h>
int main()
{
    FILE *fp;
    fp=fopen("C:\\Documents and Settings\\Administrator\\Desktop\\myfile.txt", "w");
    fprintf(fp, "Testing...\n");
    getch();
}

Regards
Prashant

Last edited by WaltP : Nov 3rd, 2007 at 1:54 pm. Reason: Removed unnecessary color and Added CODE tags -- you actually typed right over how to use them when you entered this post...

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twomers

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Re: file handeling

Nov 3rd, 2007

Do you want to print the contents to your screen or to the file? The way you opened the file there was for writing, that's what the w stands for. I was under the impression that you wanted to read the file. Use r for that. Look into fgets, or fscanf (if memory serves). http://www.cplusplus.com/reference/c...dio/fgets.html

I blag!?
"Mr Kitty, you have to live in the attic now. Here, write a diary."
I am the Walrus!

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pdwivedi

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Re: file handeling

Nov 3rd, 2007

I want to print the contents on screen and I also tried with "r" instead of "w" but it is not working!!

 Help with Code Tags 
 c Syntax (Toggle Plain Text) 
#include<stdio.h>
#include<conio.h>
int main()
{
    FILE *fp;
    fp=fopen("C:\\Documents and Settings\\Administrator\\Desktop\\myfile.txt", "r");
    fprintf(fp, "Testing...\n");
    getch();
}
#include<stdio.h>
#include<conio.h>
int main()
{
    FILE *fp;
    fp=fopen("C:\\Documents and Settings\\Administrator\\Desktop\\myfile.txt", "r");
    fprintf(fp, "Testing...\n");
    getch();
}

Last edited by WaltP : Nov 3rd, 2007 at 1:52 pm. Reason: Removed unnecessary color and Added CODE tags -- you actually typed right over how to use them when you entered this post...

Regards
Prashant

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Join Date: May 2007

Location: Ireland

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twomers

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Re: file handeling

Nov 3rd, 2007

Did you even look at the link I sent? Gah!

http://www.cplusplus.com/reference/c...dio/fgets.html

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Re: file handeling

Nov 5th, 2007

can u help me what I am doing wrong in above program??

Regards
Prashant

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WaltP

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Re: file handeling

Nov 5th, 2007

•

Originally Posted by pdwivedi

can u help me what I am doing wrong in above program??

Yes, read the link you were given twice. It tells you how to do what you want. If not, ask a specific question.

Got a cough? Go home tonight and eat a whole box of Ex-Lax. Tomorrow, you'll be afraid to cough.
-- Pearl Williams

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pdwivedi

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Re: file handeling

Nov 5th, 2007

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Originally Posted by WaltP

Yes, read the link you were given twice. It tells you how to do what you want. If not, ask a specific question.

my question is should I give the full path name as C :\\Documents and Settings\\Administrator\\Desktop\\myfile.txt in the as fopen("C:\\Documents and Settings\\Administrator\\Desktop\\myfile.txt", "r") function or should I give only fopen ("myfile.txt" , "r") in order to open a file from desktop and display its content on screen.

Regards
Prashant

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WaltP

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Posting Maven

Re: file handeling

#10

Nov 5th, 2007

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Originally Posted by pdwivedi

my question is should I give the full path name as C :\\Documents and Settings\\Administrator\\Desktop\\myfile.txt in the as fopen("C:\\Documents and Settings\\Administrator\\Desktop\\myfile.txt", "r") function or should I give only fopen ("myfile.txt" , "r") in order to open a file from desktop and display its content on screen.

Then that's what you should ask.

Use the full path...

Got a cough? Go home tonight and eat a whole box of Ex-Lax. Tomorrow, you'll be afraid to cough.
-- Pearl Williams