Comments on: 6.6 — C-style strings

By: zingmars

zingmars — Sat, 08 Oct 2011 12:55:41 +0000

It’s legal, but confusing at first and you might need to overload operators if you want to print the strings.

By: Iodream

Iodream — Mon, 22 Aug 2011 11:43:36 +0000

Well, i initialize an array of 3 strings.
Then the first loop goes through the indexes of the array and
the 2nd loop through each character of the currently selected by the first loop string.
Yes, i made a mistake when i initialize the array there should be a different name “szStringArrayAdd[3]”
Im just trying to write a program and im getting errors (errors directly in Visual Studio’s code window)

I am asking if what ive written above is legal.

By: Iodream

Iodream — Mon, 22 Aug 2011 11:42:09 +0000

By: zingmars

zingmars — Sat, 20 Aug 2011 15:57:13 +0000

I’m not sure what you tried to do there, but the code looks really wrong.
wouldn’t a single for loop suffice?

By: Iodream

Iodream — Wed, 03 Aug 2011 17:07:19 +0000

Hello. What if i want to access each symbol of a string array?
Would it look something like this:


string  szStringArray[3];

for (int iii=0;iii<3;iii++)
 for (int jjj=0;jjj
 ?

By: newUser

newUser — Sat, 16 Apr 2011 01:20:07 +0000

I’ve made some minor adjustions, namely how I did namespaces (used the suggestion from the section) and I corrected the function parameter constant.

/* Section: header */ #include #include #include #include


/* Section: constant */

const std::string NEWLINE = "\n"
/* Section: prototype */

void nfound( const std::string &v_file );
int main( int argc, char *argv[] ) {

  using namespace std;

  string the_file = "test_file.txt";

  if ( "the_file" ) {

    cout << "File found!";

  } else {

    cout << "File not found!";

    nfound( "the_file" );

  }
  cin.get();

}

void nfound( const std::string &v_file ) { using namespace std; ofstream a_file ( "v_file" ); a_file << "This text will go inside!NEWLINE"; a_file.close(); }

By: newUser

newUser — Wed, 13 Apr 2011 02:36:06 +0000

/* Section: header */ #include #include #include #include


/* Section: namespace */

using namespace std;
/* Section: constant */

const string NEWLINE = "\n" // similar to: #define NEWLINE '\n'
/* Section: prototype */

void nfound( const string &"v_file" );
int main( int argc, char *argv[] ) {

  string the_file = "test_file.txt";

  if ( "the_file" ) {

    cout << "File found!";

  } else {

    cout << "File not found!";

    nfound( "the_file" );

  }
  cin.get();

}

void nfound( const string &"v_file" ) { ofstream a_file ( "v_file" ); a_file << "This text will go inside!NEWLINE"; a_file.close(); }

This is my simple program that I want to check if a file exists, if not make it with some writting in it. The problem is I get these errors:

14: error: expected ‘,’ or ‘;’ before ‘void’
In function ‘int main(int, char**)’:
22: error: ‘nfound’ was not declared in this scope
At global scope:
28: error: expected ‘,’ or ‘…’ before string constant

I’ve looked over the code and it seems right. None of the tutorials I’ve read (best by far! really love the code section you have!) deal with a string as a parameter. Last tutorial didn’t mention the string header (#include ), but including this still didn’t help.

By: Ogre

Ogre — Thu, 27 Jan 2011 02:37:59 +0000

Ah, I just looked it up on another site, that is how it is. I just found that odd when I first saw it.

By: Ogre

Ogre — Thu, 27 Jan 2011 02:32:09 +0000

When you first use cin.getline() you say that the parameter 255 means it will only read the first 254 characters, to leave space for the null terminator. But if you initialize the array with [255] then it will have room for 255 characters plus the null terminator, right?

Also, when you first use strncpy() you say that the parameter of 49 means that is the most amount of characters it will take (excluding the null terminator), but this is inconsistent with cin.getline(). Is this really how it is?

You may also want to make it clear that we need to include for some functions.

By: subha

subha — Wed, 13 Oct 2010 07:10:19 +0000

 i want a source code for strrev(),strlwr();