Computer Science Canada

Replacing a word with an asterix
Author:  uknowhoiam [ Wed Dec 17, 2008 4:30 pm ]
Post subject:  Replacing a word with an asterix
Here's my question that i have to answer ..

Write a program that asks the user to input a word and a letter to search for in that word. Search for the letter in the word. If it is found, replace it with an asterix ?*? and print the resulting string. If not found, notify the user. Your output should look like this:

Enter a word: Daddy
Enter a letter to search for: g
Daddy does not have the letter g in it.
~or~
Enter a word: Hello
Enter a letter to search for: l
He**o

I dont know how to replace a word with an asterix.. i've tried ' letter := * ' but i get an error
can someone please help
Author:  Tony [ Wed Dec 17, 2008 4:48 pm ]
Post subject:  RE:Replacing a word with an asterix
what is this "letter" variable, and what is the value of * ?

Programming via throwing random things at the source is less forgiving than throwing random words at a text document, and hoping than an essay on your English class' book will come out.

Without replacing anything, how would you simply isolate a single letter out of a word?
Author:  uknowhoiam [ Wed Dec 17, 2008 5:06 pm ]
Post subject:  RE:Replacing a word with an asterix
letter is entered by the user

this is what i have done so far..
Turing:
var word : string
var letter : string

put "Enter a word: " ..
get word
put "Enter a letter: " ..
loop
    get letter
    if index (word, letter) not= 0 then   
    letter :=
    put "Your new word is ",
        exit
    else
        put word, " does not contain the letter ", letter
    end if
end loop

i dont know what to put after 'letter :=' and after the incomplete put command

please help


Mod Edit: Remember to use syntax tags! Thanks Smile
code:
[syntax="Turing"]Code Here[/syntax]
Author:  Tony [ Wed Dec 17, 2008 5:10 pm ]
Post subject:  RE:Replacing a word with an asterix
word and letter are two separate variables. If you change anything in letter (letter := ...) it will not have any affect on the word variable.

You might find a tutorial on String Manipulation to be useful.
Author:  uknowhoiam [ Thu Dec 18, 2008 8:22 pm ]
Post subject:  RE:Replacing a word with an asterix
i got it to work : ).... thx for your help tony

i read the string manipulation, but it didnt really help me

but w/e i got it to work Smile
Author:  Tony [ Thu Dec 18, 2008 8:26 pm ]
Post subject:  RE:Replacing a word with an asterix
How'd you manage to do that?
Author:  uknowhoiam [ Fri Dec 19, 2008 3:49 pm ]
Post subject:  RE:Replacing a word with an asterix
this is my code
Turing:

var letter : string

put "Enter a word: " ..
get word
put "Enter a letter: " ..
 letter
loop
    get letter
    %if index not = 0 then..
    if index (word, letter) not= 0 then
       
        loop
            word := word (1 .. index (word, letter) - 1) + "*" + word (index (word, letter) + 1 .. *)
           
            exit when index (word, letter) = 0
        end loop
        exit
    else
        put word, " does not contain the letter ", letter
    end if
end loop

put word


Turing:
word:= word (1..index(word,letter) - 1) + "*" + word (index (word,letter) + 1 .. *)
is the 'equation' that made this work

Mod Edit: Remember to use syntax tags!
code:
[syntax="Turing"]Code Here[/syntax]
Author:  dc116 [ Fri Dec 19, 2008 5:25 pm ]
Post subject:  RE:Replacing a word with an asterix
Remember that you have to declare all the variables first.

:


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