simple prob passing a reference of arrays to a func.

[MC felon]

void DoThang (char (&cMovesDone)[9])
{
for(int i = 0; i<9; i++)
cMovesDone[i] = 'k';
}

int main()
{
char c;
DoThang (c);
cout<<c;
}

I tried outputting the cMovesDone using cout<<. It's displaying wierd
characters. what's wrong?

[Ian Collins]

Re: simple prob passing a reference of arrays to a func.

MC felon wrote:

void DoThang (char (&cMovesDone)[9])
{
for(int i = 0; i<9; i++)
cMovesDone[i] = 'k';
}
>
int main()
{
char c;
DoThang (c);
cout<<c;
}
>
I tried outputting the cMovesDone using cout<<. It's displaying wierd
characters. what's wrong?

The snippet you posted won't compile.

--
Ian Collins.

[MC felon]

Re: simple prob passing a reference of arrays to a func.

The snippet you posted won't compile.
>
--
Ian Collins.

Sorry!
That piece didn't initialize an array of chars.
it's basically this:

#include <max.h>
#include <dpl.h>

void DoThang (char (&cMovesDone)[9])
{
for(int i = 0; i<9; i++)
cMovesDone[i] = 'k';
}

int main()
{
dpl_DosGraphixE nable();
char c[9] = "aaaaaaaa";
DoThang (c);
cout<<c;
}

max.h and dpl.h are my own headers. They do little things like make a
dos app look neater by putting up nice little lines and such
decorations.
Ignore them. The problem is when i compile the code above (bereft of
dpl_DosGraphixE nable()), i get an output of kkkkkkkkkr and some really
wierd symbols like a small smiley and lines. I mean there are already
9 k's there already, where did the r and the other stuff come from?
what should i do?

[Triple-DES]

Re: simple prob passing a reference of arrays to a func.

On 19 Feb, 11:10, MC felon <paec....@gmail .comwrote:

The snippet you posted won't compile.

>

--
Ian Collins.

>
Sorry!
That piece didn't initialize an array of chars.
it's basically this:
>
#include <max.h>
#include <dpl.h>
>
void DoThang (char (&cMovesDone)[9])
{
 for(int i = 0; i<9; i++)
 cMovesDone[i] = 'k';
>
}
>
int main()
{
 dpl_DosGraphixE nable();
 char c[9] = "aaaaaaaa";
 DoThang (c);
 cout<<c;
>
}
>
max.h and dpl.h are my own headers. They do little things like make a
dos app look neater by putting up nice little lines and such
decorations.
Ignore them. The problem is when i compile the code above (bereft of
dpl_DosGraphixE nable()), i get an output of kkkkkkkkkr and some really
wierd symbols like a small smiley and lines. I mean there are already
9 k's there already, where did the r and the other stuff come from?
what should i do?

The problem is that you are missing a \0 character at the end of the
char array. so operator<< will happily keep printing until it reaches
a \0 byte in memory. (Actually it's undefined behaviour, but this is
likely what you're seeing).

An easy fix would be to make the array one character larger and put a
'\0' there. Also consider using an std::string or std::vector instead
of an array.