Winnie Leung  F.4CA  (22)
Question  Paper
Computer Test (I)   (23/3/2000)
Show your rough work on the spaces by the questions. 

1. In order to extract a sub-string of string s from the i-th
position 
    to the last, the corresponding statement is 
    A.   copy(s, i, length(s)) 
    B.   copy(s, i, length(s) - 1) 
    C.   copy(s, i, length(s) - i) 
    D.   copy(s, i, length(s) - i + 1) 
    E.    copy(s, i, length(s) - i - 1) 
Ans :  ____________________________ 

2. Which of the following conditions is/are true? 
    (1)   'ABC' = 'ABC ' 
    (2)   'ABC' < 'abc' 
    (3)   '32' < '123' 

     Ans : _______________________ 

3. What is the output when the following program segment is 
    executed? 
             var 
                   a, b : string; 
             ...... 
                   a := '1234'; 
                   b := '789'; 
                   writeln(a + b); 

     Ans : _______________________ 

4. What is the output of the following program segment? 
                  var 
                       a : string; 
                       b, i : integer; 
                   ...... 
                       a := '123'; 
                       b := 0; 
                       for i :=1 to 2 do begin 
                            a := a + '45'; 
                            b := b + length(a) + i; 
                            end; 
                        writeln(b); 

        Ans : ___________________________ 

5.                var 
                        a, b : integer; 
                   ....... 
                        a := 'ROMRAMROM'; 
                        b := copy(a, 5, 5); 
                        writeln(ord(b[1]); 
         What is the output of the above Pascal program segment? 

          Ans :  _________________________ 

6.                 var 
                          a : string; 
                           i : integer; 
                     ..... 
                           a := 'ABCDE'; 
                           for i := 5 downto 1 do 
                                a[i] := chr(ord(a[i])) +15); 
                           writeln(a); 
            What is the output of the above program ? 

            Ans :  _________________________ 
  
7.                 var 
                           a : string; 
                           k : integer; 
                    ........... 
                           a := 'COMPUTER'; 
                           k := length(a); 
                           for  i := 1 to k do 
                                 a := a[2*i - 1] + a; 
                           writeln(copy(a, 1, k)); 
               What is the output of the above Pascal program segment? 

                Ans : _____________________________ 

8.                  var 
                          x, y : string; 
                          k, s : integer; 
                     ....... 
                          x := 'COMPUTER'; 
                          y := 'LANGUAGE'; 
                          s := 0; 
                          for k := 1 to 8 do 
                               if copy(x, k, 1) > copy(y, 9-k, 1) then s := s + 1; 
                          writeln(s); 
              What is the output of the above program segment? 

               Ans. : ______________________________ 

9. How many times will the following loop be executed? 
              var 
                     b : integer; 
              ....... 
              b :=0; 
              while b<=8 do 
                      b := b + 2; 

      Ans :  ____________________________ 

10. Which of the following comparisions give(s) the result true? 
       (1)  0 > -3  or -5<-7 
       (2) 'k' > 'K' and 'a' > '9' 
       (3) 'A' > '8' 
  
       Ans : ___________________________