Sorting Text file Using C Program

Sorting Text file Using C Program

#include 

#include 

#include 

const int MAX = 1024;

void insert_sorted (long *sorted, int count, long value)

{

int i = 0;

sorted[count] = value;

if (count == 0) return;

for (i = count;i >= 0; i--) 

{

if (value < sorted[i-1])

sorted[i] = sorted[i-1];

else break;

}

sorted[i] = value;

}

int main (int argc, char *argv[])

{

FILE *infile = NULL;

long sorted[1024];

long value;

int count = 0;

int i = 0;

if (argc < 2) {

fprintf (stderr, "Usage : %s \n", argv[0]);

return 1;

}

infile = fopen (argv[1], "r");

if (NULL == infile) {

perror ("fopen");

return -1;

}

/* while file not ends */

while (!feof (infile)) {

fscanf (infile, "%ld\n", &value); /* fetch value */

insert_sorted (sorted, count, value); /* sort */

++count; /* increase number of sorted values */

}

/* display values */

printf ("Sorted values : ");

for (i = 0; i < count; i++ ) {

printf ("%ld ", sorted[i]);

}

/* cleanup */

if (infile) {

fclose (infile);

infile = NULL;

}

return 0;

}