Silly pointer question

[SmileeTiger]

I am trying to do something with a pointer to an array of characters being passed to a function. More or less what I want to do is place the contents of the array into another array that I have created with a pointer pointing to it.

void Func(unsigned char *data, int dataWidth)
{
int width=100;
unsigned char *NewData= new unsigned char[width];
for (int i=0; i<dataWidth; i++)
*(NewData+i)=(data+i);

}

Should this work?


Smilee

 

[KeithBrautigam]

I think you may have forgotten an asterisk:
*(NewData+i)=*(data+i);

If that doesn't work, you may wish to try replacing the &quot;for&quot; loop with the following line:

memcpy(NewData, data, dataWidth);

 

[Zyrenthian]

why not do this

strncpy(NewData,data,dataWidth);

could save you some time with the for loop.

Keiths post above will also produce the desired result but after the for loop you will need to do
*(NewData+dataWidth) = '\0';

Matt

 

[jpoggio]

Another tip would be using &quot;strdup(...)&quot; : it allocates the exact memory amount to store a null terminated character string an copy it.