// The program parses the input switches to sort
// supports command lines such as sort -r -u -n
// but not sort -run which you will need for
// the Lab3

#include<stdio.h>

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

  int unique, reverse, numsort;
  char *progname;
  
  progname = argv[0];
  
  // run through the input commands looking 
  // for switches

  while((argc > 1) && (argv[1][0] == '-')) {

    // argv[1][1] is the actual option

    switch (argv[1][1]) {

    case 'r': 
        printf("Switch is %c\n", argv[1][1]);
	reverse = 1;
        break;
    case 'u':
        printf("Switch is %c\n", argv[1][1]);
      	unique = 1;
        break;
    case 'n':
        printf("Switch is %c\n", argv[1][1]);
      	numsort = 1;
        break;

    default:
      printf("Usage: bad option %s\n", argv[1]);
      break;
    }

    // decrement the number of arguments left
    // increment the argv pointer to the next argument

      argc--; argv++;
  }

  // other processing

  return(0);
}