Thread: sorting data from file input

I am a newbie to C and I was wondering if someone has a small piece of code I could use to sort the following file input. I have made a small file with 11 social security numbers and I need these to be sorted in descending order and then displayed on the screen. Right now the data is displayed without sorting. Any help would be appreciated. Thanks.

Code:

#include <stdio.h>
#include <stdlib.h>
int main(void)
{
	int x, y[10];
	FILE *fp;
	fp = fopen("testdat.txt","r");
	for (x=0;x<10;x=x++)
	{
		fscanf(fp,"%d",&y[x]);
		printf("%d\n",y[x]);
	}
	fclose(fp);
}

use the OS to sort, don't write a bubble sort.

Code:

#include <stdio.h>
#include <stdlib.h>
int main(void)
{
	int x, y[10];
	FILE *fp;
	/* this is a windows box */
	shell("sort testdat.txt /o tmp.tmp");
	/* if this is a unix box
	shell("sort testdat.txt -o tmp.tmp");
	fp = fopen("tmp.tmp","r");
	for (x=0;x<10;x=x++)
	{
		fscanf(fp,"%d",&y[x]);
		printf("%d\n",y[x]);
	}
	fclose(fp);
}

this may not be what your teacher would want, though