Array Question.

Code:

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#include <iostream>

int main ()
{
int x;
char b[4] = {'a','b','ba','s'};

std::cout <<b[0] <<std::endl;
std::cout <<b[1] <<std::endl;
std::cout <<b[2] <<std::endl;
std::cout <<b[3] <<std::endl;
std::cin >> x;
return 0;
}

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Why does the array element b[2] only output one character? How do I make it to output both b and a instead of just a?

Element b[2] can only hold one char. It's the same as defining a regular, single char. It's set up as a space in memory that can only hold enough data for on character.

Try this.

Code:

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#include <iostream>
#include <string>

int main ()
{
int x;
std::string b[4] = {"a","b","ba","s"};

std::cout <<b[0] <<std::endl;
std::cout <<b[1] <<std::endl;
std::cout <<b[2] <<std::endl;
std::cout <<b[3] <<std::endl;
std::cin >> x;
return 0;
}

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to make it do what your wanting you would need to use a multi-dimensional array.

Code:

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char TwoLetters[5][2] = { "ab", "cd", "ef", "fg", "hi" };

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I believe this is correct.

EDIT: didnt notice your response swoopy.

just think of my example as an alternate method :p

>didnt notice your response swoopy.
It's always a plus to have multiple methods at your disposal. :D

What is the difference between the single quotes and the double quoates?

Single quote are used for chars, and double quotes are used for strings and char arrays. A good way to remember this is

Single quote - single char
Multiple quotes - multiple chars

Quote:

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std::string b[4] = {"a","b","ba","s"};

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Why my vc++6.0 cannt support "string" type ,althought I have #include <string.h> ?

Quote:

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Originally Posted by toysoldier

Why my vc++6.0 cannt support "string" type ,althought I have #include <string.h> ?

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Try #include <cstring> or #include <string>

Quote:

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Originally Posted by RealityFusion

Try #include <cstring> or #include <string>

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Must be

Code:

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#include <string>

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since <cstring> is stuff from the C standard <string.h>, and doesn't include C++ string class.

Dave

@ RealityFusion :
Thanks , I will try it after go home.

@Dave Evans :
Thanks , I have try include <string.h> , maybe try include <string> again.

> char TwoLetters[5][2] = { "ab", "cd", "ef", "fg", "hi" };
These are not 'C' strings, you do not allow room for the \0 at the end.
Whilst you can do this in C, you're not even allowed to omit the \0 when compiling for C++

If you want an array of string constants, try

Code:

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char *words[] = {
  "hello",
  "world",
};

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