text: #include <assert.h>
  #include <stdio.h>
  #include <assert.h>
  #include <stdio.h>
  #include <string.h>
  
  /*
  output:
  testing
  done
  end:
  */
  
  int
  main()
  {
  	puts("testing");
  
  	assert(strcoll("abcd", "abcd") == 0);
  	assert(strcoll("abcd", "a") > 0);
  	assert(strcoll("a", "abcd") < 0);
  	assert(strcoll("aa", "ab") < 0);
  	assert(strcoll("ab", "aa") > 0);
  	assert(strcoll("", "a") < 0);
  	assert(strcoll("a", "") > 0);
  
  	puts("done");
  
  	return 0;
  }
  