Hello, I'm new to C# and I am having a small problem. All I want to do is
take a sentence from the user then replace certain words with other ones.
So I started off with this:
string myString = Console.ReadLine();
string editString;
editString = myString.Replace("is", "isn't");
Console.WriteLine(editString);
Which if I entered "This is a test" I got back "Thisn't isn't a test"
I got round this by looking for the word to replace by putting spaces round
the string:
string myString = Console.ReadLine();
string editString;
editString = myString.Replace(" is ", " isn't ");
Console.WriteLine(editString);
Which was fine for this example, but what if there is punctuation involved?
what if I wanted to convert "This is." it wouldn't pick it up because of the
full stop. Would it be best to do it a different way by stripping all the
punctuation out somehow? but then how would you put it back in? is there a
simple way of doing this?
Thanks for any help,
Andy 5 1488
Take a look at Regex.Replace and regular expressions.
HTH
Alex
"Andy Hoe" <an*********@dsl.pipexBLAH.comBLAH> wrote in message
news:3f**********************@news.dial.pipex.com. .. Hello, I'm new to C# and I am having a small problem. All I want to do is take a sentence from the user then replace certain words with other ones. So I started off with this:
string myString = Console.ReadLine(); string editString; editString = myString.Replace("is", "isn't"); Console.WriteLine(editString);
Which if I entered "This is a test" I got back "Thisn't isn't a test" I got round this by looking for the word to replace by putting spaces
round the string:
string myString = Console.ReadLine(); string editString; editString = myString.Replace(" is ", " isn't "); Console.WriteLine(editString);
Which was fine for this example, but what if there is punctuation
involved? what if I wanted to convert "This is." it wouldn't pick it up because of
the full stop. Would it be best to do it a different way by stripping all the punctuation out somehow? but then how would you put it back in? is there a simple way of doing this? Thanks for any help, Andy
Hi Andy,
Take a look on *Regex* class and regular expressions
HTH
B\rgds
100
"Andy Hoe" <an*********@dsl.pipexBLAH.comBLAH> wrote in message
news:3f**********************@news.dial.pipex.com. .. Hello, I'm new to C# and I am having a small problem. All I want to do is take a sentence from the user then replace certain words with other ones. So I started off with this:
string myString = Console.ReadLine(); string editString; editString = myString.Replace("is", "isn't"); Console.WriteLine(editString);
Which if I entered "This is a test" I got back "Thisn't isn't a test" I got round this by looking for the word to replace by putting spaces
round the string:
string myString = Console.ReadLine(); string editString; editString = myString.Replace(" is ", " isn't "); Console.WriteLine(editString);
Which was fine for this example, but what if there is punctuation
involved? what if I wanted to convert "This is." it wouldn't pick it up because of
the full stop. Would it be best to do it a different way by stripping all the punctuation out somehow? but then how would you put it back in? is there a simple way of doing this? Thanks for any help, Andy
Hi,
Regular expressions have a zero-width assertation \b. This specifies that
the match must occur on a word boundary.
using System.Text.RegularExpressions; string myString = Console.ReadLine(); string editString;
editString = Regex.Replace (myString,"\\bis","isn't"); Console.WriteLine(editString);
HTH
greetings
"Andy Hoe" <an*********@dsl.pipexBLAH.comBLAH> wrote in message
news:3f**********************@news.dial.pipex.com. .. Hello, I'm new to C# and I am having a small problem. All I want to do is take a sentence from the user then replace certain words with other ones. So I started off with this:
string myString = Console.ReadLine(); string editString; editString = myString.Replace("is", "isn't"); Console.WriteLine(editString);
Which if I entered "This is a test" I got back "Thisn't isn't a test" I got round this by looking for the word to replace by putting spaces
round the string:
string myString = Console.ReadLine(); string editString; editString = myString.Replace(" is ", " isn't "); Console.WriteLine(editString);
Which was fine for this example, but what if there is punctuation
involved? what if I wanted to convert "This is." it wouldn't pick it up because of
the full stop. Would it be best to do it a different way by stripping all the punctuation out somehow? but then how would you put it back in? is there a simple way of doing this? Thanks for any help, Andy
Why don't you say
editString = myString.Replace (" is", " isn't");
"Andy Hoe" <an*********@dsl.pipexBLAH.comBLAH> wrote in message news:<3f**********************@news.dial.pipex.com >... Hello, I'm new to C# and I am having a small problem. All I want to do is take a sentence from the user then replace certain words with other ones. So I started off with this:
string myString = Console.ReadLine(); string editString; editString = myString.Replace("is", "isn't"); Console.WriteLine(editString);
Which if I entered "This is a test" I got back "Thisn't isn't a test" I got round this by looking for the word to replace by putting spaces round the string:
string myString = Console.ReadLine(); string editString; editString = myString.Replace(" is ", " isn't "); Console.WriteLine(editString);
Which was fine for this example, but what if there is punctuation involved? what if I wanted to convert "This is." it wouldn't pick it up because of the full stop. Would it be best to do it a different way by stripping all the punctuation out somehow? but then how would you put it back in? is there a simple way of doing this? Thanks for any help, Andy
Carol Sun <ap****@hotmail.com> wrote: Why don't you say editString = myString.Replace (" is", " isn't");
That has the same problem with other words:
"This is an issue that needs resolving" would become
"This isn't an isn'tsue that needs resolving"
--
Jon Skeet - <sk***@pobox.com> http://www.pobox.com/~skeet
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