I need help with Malloc()
I am new to C programming and need a little help. I want to write and read 64 and 8 bit values to/from memory. I can not use a structure so I think the best idea is to use Malloc() to get some memory.
How do I use Malloc() to get a pointer to a 1024 bytes memory area?
How do I write 64 and 8 bit values to the area and increase the pointer after each value I write?
How do I read 64 and 8 bit values from the area and increase the pointer after each value I read?
As simple as that :-)
Try the C Board insteed.
>>How do I use Malloc() to get a pointer to a 1024 bytes memory area?
Do you mean:
p = malloc(1024);
>>How do I write 64 and 8 bit values to the area and increase the pointer after each value I write?
To write to where the pointer is pointing:
*p = data;
To increment the pointer:
p++;
or
p += somevalue;
>>How do I read 64 and 8 bit values from the area and increase the pointer after each value I read?
data = *p;
>>As simple as that
Yeah... right. My answer is a bit generic, if you still need help post some code and someone will guide you.
When all else fails, read the instructions.
If you're posting code, use code tags: [code] /* insert code here */ [/code]
Hi!
And thanks for your answer, everything works :-)
Originally posted by Hammer
>>How do I use Malloc() to get a pointer to a 1024 bytes memory area?
Do you mean:
p = malloc(1024);
>>How do I write 64 and 8 bit values to the area and increase the pointer after each value I write?
To write to where the pointer is pointing:
*p = data;
To increment the pointer:
p++;
or
p += somevalue;
>>How do I read 64 and 8 bit values from the area and increase the pointer after each value I read?
data = *p;
>>As simple as that
Yeah... right. My answer is a bit generic, if you still need help post some code and someone will guide you.
