Can anyone explain the following coding step by step?

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Can anyone explain this codin step by step?

Here is the coding :

C#

using System;

delegate string StrMod(string str);

class MainClass {

  static string replaceSpaces(string a) {
    Console.WriteLine("replaceSpaces");
    return a;
  }

  static string removeSpaces(string a) {
    Console.WriteLine("removeSpaces");
    return a;
  }

  static string reverse(string a) {
    Console.WriteLine("reverseSpaces");
    return a;
  }

  public static void Main() {
    StrMod strOp = new StrMod(replaceSpaces);
    string str;

    str = strOp("This is a test.");

    strOp = new StrMod(removeSpaces);
    str = strOp("This is a test.");

    strOp = new StrMod(reverse);
    str = strOp("This is a test.");
  }
}

Posted 29-Nov-11 21:07pm

sathiyak

Updated 29-Nov-11 21:15pm

Manoj K Bhoir

v2

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3 solutions

Solution 1

Do you have any idea how much work explaining code line by line is?
Every single line needs a paragraph of explanation! For example:

int next = r.Next();

Create a new variable called "next" which can hold a integer value. From the previously declared Random instance "r", call the "Next" method to get a new random number, and assign it to the "next" variable.

Can you imagine how long it would take us to explain even a very short code fragment like your example, line by line?

No. It is not going to happen. If you have a specific problem, then ask a question about it. But think first - would you want to sit down for 45 minutes and type up a line-by-line description for no good reason?

Posted 29-Nov-11 21:13pm

OriginalGriff

Comments

sathiyak 30-Nov-11 3:23am

ok....understood...

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Solution 2

Accept Solution Reject Solution

I'm sure many people here could, but why would they?
You've made no attempt to explain what part of it you don't understand, or why you need to.

It smacks to me of a "Please do my homework for me" question...

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Posted 29-Nov-11 23:05pm
pt1401

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Manfred Rudolf Bihy · Accepted Answer · 2011-11-30T01:04:00

I'll give you a couple of ideas by pointing you to the interesting parts in the code fragment you posted:

C#

using System;
// Here a type is declared that is something akin to a pointer to
// 
  // This function does not really replace spaces, but only writes output to the console and returns
  // the original string. 
  static string replaceSpaces(string a) {
    Console.WriteLine("replaceSpaces");
    return a;
  }

  // This is ^__b style="color:red"__^a function that returns a string and takes a string as a parameter</b__^
  // This function does not really remove spaces, but only writes output to the console and returns
  // the original string.
  static string removeSpaces(string a) {
    Console.WriteLine("removeSpaces");
    return a;
  }

  // This is ^__b style="color:red"__^a function that returns a string and takes a string as a parameter
  // This function does not really reverse a string, but only writes output to the console and
  // returns the original string.
  static string reverse(string a) {
    Console.WriteLine("reverseSpaces");
    return a;
  }

  public static void Main() {
    // After this line ^__b__^strOp can be called like a function that returns a string and takes a string as a parameter.
    // The dummy function ^__b__^replaceSpaces will be called.
    StrMod strOp = new StrMod(replaceSpaces); 
    string str;
    str = strOp("This is a test.");
    
    // After this line ^__b>strOp can be called like a function that returns a string and takes a string as a parameter.
    // The dummy function ^__b>removeSpaces will be called.
    strOp = new StrMod(removeSpaces);
    str = strOp("This is a test.");

    // After this line ^__b>strOp can be called like a function that returns a string and takes a string as a parameter.
    // The dummy function ^__b>reverse will be called.
    strOp = new StrMod(reverse);
    str = strOp("This is a test.");
  }
}

Regards,

—MRB