Batch Program Example

Sorting Trucks

The first line of file INPUT.TXT contains the number n of trucks to be sorted (1<=n<=10). Each of the following n lines describes one truck by a string of at least 1 and most 20 lowercase letters (from `a' to `z').

The weight of a truck is given by the length of its string. All trucks differ in weight.

On the first line of file OUTPUT.TXT your program should write the weight of the lightest and the weight of the heaviest truck in the input file. On the following n lines it should write the input strings in order of increasing weight, one string per line.

Example Input and Output

The figure below gives an example input file with four trucks, and the corresponding output file.
+-----------+------------+
| INPUT.TXT | OUTPUT.TXT |
+-----------+------------+
|4          |1 6         |
|aabbcc     |z           |
|klm        |ns          |
|z          |klm         |
|ns         |aabbcc      |
+-----------+------------+

Batch Program in Turbo Pascal:

var inp, out: text;
    n, i, wl, wh: integer;
    s: array [1..10] of string[20];
begin
   Assign(inp, 'INPUT.TXT') ; reset(inp) ;
   Assign(out, 'OUTPUT.TXT') ; rewrite(out) ;
   readln(inp, n) ;
   for i := 1 to n do readln(inp, s[i]) ;
   ...
   writeln(out, wl, ' ', wh) ;
   for i := 1 to n do writeln(out, s[i]) ;
   close(out)
end.

Batch Program in Turbo C++:

#include <fstream.h>
ifstream inp ("INPUT.TXT");
ofstream out ("OUTPUT.TXT");
int n, i, wl, wh;
char s[11][21];
int main()
{ inp >> n;
  for (i=1; i<=n; ++i) inp >> s[i];
  ...
  out << wl << ' ' << wh << '\n';
  for (i=1; i<=n; ++i) out << s[i] << '\n';
  return 0;
}

Batch Program in QuickBasic:

OPEN "INPUT.TXT" FOR INPUT AS #1
OPEN "OUTPUT.TXT" FOR OUTPUT AS #3
DEFINT A-Z
DIM s(1 TO 10) AS STRING
INPUT #1, n
FOR i = 1 TO n
  INPUT #1, s
NEXT i
...
PRINT #3, wl; wh
FOR i = 1 TO n
  PRINT #3, s
NEXT i
END