Re: C code... file reading(twice)... strange problem!

Sorry, posted a 'code under debugging' file, apologies
for that...
the original code file is here...

--- Rohit Kumar <rohitsz2-/[email protected]> wrote:
> Greetings there,
> i am getting strange result in the following code...
> what i am doing in the code...
> 
> 0.main
> 1.create a file
> 2.write numbers into it
> 3.close file
> 
> 4.open file in read mode
> 5.read numbers written
> 6.close file
> 
> 7.call a function
> 8.open file(same file)
> 9.read numbers
> 10.assign it to a pointer
> 11.close file
> 12 return pointer
> 
> 13.print numbers from the pointer received in main
> 14.end-main
> 
> 
> upto step 8 things are ok..
> after that when i try to read the numbers from the
> file, it always returns the last number that was
> written to the file...
> here goes the code...
>
-------------------------------------------------------
#include<stdio.h>
#include<stdlib.h>

#define LT 10   /* 10 */

long* getRandomNumArray(long);

int main()
{

long i,*val;
FILE *fs;
long *li,*lb;

fs=fopen("temp.dat","w");

if(fs==NULL)
	{
		printf("Error opening file[w]\n");
	}
else
{

	for(i=0;i<LT;i++)
	{
		val=&i;
		fwrite(&val,sizeof(long),1,fs);
		printf("%ld\t",*val);
	}

}
if(fs!=NULL)
	fclose(fs);


printf("\n");

fs=fopen("temp.dat","r");
if(fs==NULL)
	{
		printf("Error opening file[r]\n");
	}
else
{
	for(i=0;i<LT;i++)
	{
		fread(&val,sizeof(long),1,fs);
		printf("%ld\t",*val);
	}

}
if(fs!=NULL)
	fclose(fs);

printf("\n");

	lb=getRandomNumArray(LT);
	li=lb;
	if(li!=NULL)
	{
	printf("printing number\n");
	for(i=0;i<LT;i++)
		printf("%ld \t",*li++);
	}
printf("\n");
return 0;
}/*main*/


long* getRandomNumArray(long n)
{
	long *base,*ptr,*val;
	long i; int p;
	FILE *fp;

	fp=fopen("temp.dat","r");

	if(fp!=NULL)
	{

		ptr=(long *)malloc(n*sizeof(long));
		base=ptr;

		printf("\n in getRandomNumArray(long n)\n");
		if(base!=NULL)
		{

			for(i=0;i<n;i++)
			{/* fread reads same value every time!*/
				fread(&val,sizeof(long),1,fp);
				printf("%ld: %ld\n",i,*val);
				*ptr++=*val;
			}

		}
		else
		{
			printf("Cannot Allocate memory\n");
			free(ptr);
			free(base);
			base=NULL;
			ptr=NULL;
		}
		fclose(fp);
	
	}
	else
	{
		printf("Unable to open File...\n");
	
	}
	return base;
	
}
-------------------------------------------------------

apologies once again,
help still needed...

thanks,
-rohit.

NAMASTE, i honour the spirit in you which is also in me.
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