Dumb Question for C Newbie

[JohnW]

I am taking a C application and re-writing it in C# but am having a problem understanding the C syntax.

I have these three lines of code:

double ti(unsigned char *data)
{
int address=0x26;
unsigned char *tempdata = data + address;
return tempdata
}

What is the third line doing? It seems odd to be 'adding' an integer to a char. What would you expect the value*tempdata to hold and what would be returned?

[stanlvw]

The third line returns the address of *tempdata. Value of *tempdata is data + address as indicated on the second line. Btw, the third line should have a semicolon at the end of the line.

[matsp]

It is not adding an integer to a char, it's adding an integer to a char pointer - that means, it is calculating an address at an offset from the base pointer (data).

I expect the compiler to be fairly unhappy about returning a unsigned char pointer as a double value, so I don't think it will compile (at the very least it should give a warning).

--
Mats

[JohnW]

Many thanks guys - that explains everthing in language I can undestand.