file manipulation

[beginner2011]

Hi ,
i was trying to write every 3rd character from first file to the second file.
I'm using VS2008.
But i'm getting error in debugger as (stream!=NULL).
here is the code.
#include<stdio.h>
#include<string.h>


int main()
{
FILE *fp=NULL,*fp1=NULL;
int count =0;
char ch;
if(fp=fopen("s1.txt","r")==NULL)
{
printf("error\n");
}
if(fp1=fopen("s2.txt","w")==NULL)
{
printf("error\n");
}
while((ch=getc(fp))!= EOF)
{

if(++count%3==0)
{
putc(ch,fp1);
}
}
return 0;
}

[Akshit]

1)if((fp=fopen("s1.txt","r"))==NULL)
2)if((fp1=fopen("s2.txt","w"))==NULL)
3)s1.txt must be present.
4)It will not read 1st character.(It starts reading from 3)

It worked for me with these things.

[beginner2011]

hi Akshit,
Thanks for the reply
s1.txt was present.
just by including fp=fopen("s1.txt","r") within an extra bracket solved the problem for me.. its a kind of strange. but it works now.

Thanks once again.

[Akshit]

Happy to help.