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can any body explain this program

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Join Date: Jun 2008

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sambafriends sambafriends is offline

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can any body explain this program

Nov 24th, 2008

Hi,

the concept of the program is enter a piece of text from the keyboard and place that piece of text into a file

 Help with Code Tags 
 c Syntax (Toggle Plain Text) 
#include<stdio.h>
#include<conio.h>
#include<stdlib.h>
#include<string.h>
 
void main()
{
	 FILE *fp;
	 char s[80];
	 fp=fopen("new.txt","w");
	 if(fp==NULL)
	 {
		  printf("unable to open file");
		  exit(1);
	 }
 
	 printf("enter new line of text:\n");
	 while(strlen(gets(s))>0)
	 {
		 fputs(s, fp);
		 fputs("\n", fp);
	 }
	 fclose(fp);
 
	}
#include<stdio.h>
#include<conio.h>
#include<stdlib.h>
#include<string.h>

void main()
{
	 FILE *fp;
	 char s[80];
	 fp=fopen("new.txt","w");
	 if(fp==NULL)
	 {
		  printf("unable to open file");
		  exit(1);
	 }

	 printf("enter new line of text:\n");
	 while(strlen(gets(s))>0)
	 {
		 fputs(s, fp);
		 fputs("\n", fp);
	 }
	 fclose(fp);

	}

But, after completing this program
when I open the text file there is no result at all
what is the problem is it really write the contents to a new.txt file or not. If yes please explain briefly why my text file is not changin
else please give the solution
regards,

Last edited by Narue; Nov 25th, 2008 at 9:42 am. Reason: added code tags

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Join Date: Sep 2008

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devnar

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Re: can any body explain this program

Nov 24th, 2008

This is your 14th post, and you still don't bother to use code tags. Also it was mentioned quite a lot of times in your previous thread that you should use int main instead of void main .

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Join Date: Jun 2008

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Re: can any body explain this program

Nov 25th, 2008

thanku for ur patience replies

Sorry but what is the exact difference between void main and int main
I know only one thing void is a data type which specifies the function doesn't return any value.

any thing gr8 diffrence between these two can u explain please

regards,
samba

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Re: can any body explain this program

Nov 25th, 2008

Main() must return a zero for successful operation.

"Jedenfalls bin ich überzeugt, daß der Alte nicht würfelt."
"I became very sensitive to what will happen to all this and all of us." -Two geniuses named Albert

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Join Date: Sep 2008

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devnar

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Re: can any body explain this program

Nov 25th, 2008

Read this article.
There's a very well explained article by Steve Summit about the incorrect usage of main's return type. It's in the link pasted above. Anyway, here's a direct link. It certainly helped me when I was trying to understand what all the noise about main's return type was... which wasn't very long back actually.