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- /*
- TRYQSORT.C Demonstrates use of the library
- routine 'qsort' to sort strings.
-
- Ray Duncan * PC Magazine May 1988
- */
-
- #include <stdio.h>
- #include <string.h>
- #include <stdlib.h>
-
- #define ITEM_LENGTH 80 /* max string length */
- #define N_ITEMS 25 /* max number of strings */
- /* strings stored here */
- static char items[N_ITEMS * ITEM_LENGTH];
-
- main(int argc, char *argv[])
- {
- int i, j; /* some scratch variables */
-
- while(1) /* get strings & sort them */
- {
- puts("\nEnter strings to be sorted...");
- i = 0; /* initialize string count */
- while(i < N_ITEMS) /* enforce maximum entries */
- {
- printf("%2d: ", i+1); /* prompt user */
- /* read the keyboard */
- gets(&items[ITEM_LENGTH * i]);
- /* last entry if empty line */
- if(items[ITEM_LENGTH * i] == 0) break;
- i++; /* bump string counter */
- }
- if(i==0) exit(0); /* if no strings exit */
- /* sort the strings */
- qsort(items, i, ITEM_LENGTH, strcmp);
- puts("\nHere are the sorted strings...");
- j = 0; /* initialize string counter */
- while (j < i) /* display sorted strings */
- {
- printf("%2d: %s\n", j+1, &items[ITEM_LENGTH * j]);
- j++; /* bump string counter */
- }
- }
- }
-