Thread: tring to sort file along with converting it from char to int

I seem to have tried everything I know. This thing is due in a few days so any help would be greatly appreciated. I read numbers from a text file and sort them.

Code:

#include <stdio.h>
#include <stdlib.h>
#define MAXLINE 30
void sort(int[], int);
void display(int[], int);
FILE *fp;

int main(void)
{
   int x;
   int i;
   fp = fopen("C:\\grades_data.txt", "r");
   char line[MAXLINE];
   while(fgets(line, MAXLINE, fp) != NULL && line[0] != '\n')
         fputs(line, stdout);
   for(i = 0; i < MAXLINE; i++)
      x = atoi(line);
   sort(x, 30);
   fclose(fp);
   system("PAUSE");
   return 0;
}

void sort(int n[], int size)
{
   for(int i = 0; i < size; i++)
   {
      for(int j = 0; j < size; j++)
      {
         if(n[i] < n[j])
         {
            int temp = n[i];
            n[i] = n[j];
            n[j] = temp;
         }
      }
   }

   display(n, size);
}

void display(int n[], int size)
{
   int i;
   for(i = 0; i < size; i++)
   {
      printf("This is the sorted list %d :\n", n[i]);
   }
}

here is the contents of the grades_data.txt file

Code:

9
25
55
1
4
98
74
44
11
19
0
85
64
23
3
6
99
51
100
0
68
97
90
13
17
45
38
42
12
24

what exactly is the problem?