K and R C, Solution to Exercise 5-14:
K and R C Programs Exercises provides the solution to all the exercises in the C Programming Language (2nd Edition). You can learn and solve K&R C Programs Exercise.
Write a C program to handle a -r flag which indicates sorting in reverse (decreasing) order. But sure that -r works with -n.Read more about C Programming Language .

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#include <stdio.h>
#include <string.h>
#include <stdlib.h>

#define TRUE 1
#define FALSE 0

#define MAXLINES 5000       
char *lineptr[MAXLINES];

#define MAXLEN 1000        

int reverse = FALSE;

int getline(char s[], int lim)
{
 int c, i;

 for (i = 0; i < lim - 1 && (c = getchar()) != EOF && c != 'n'; i++)
  s[i] = c;
 if (c == 'n') {
  s[i++] = c;
 }
 s[i] = '