Question

I was working with C++ for a long time and now I am on a C project.
I am in the process of converting a C++ program to C.

I am having difficulty with the constants used in the program.
In the C++ code we have constants defined like

static const int X = 5 + 3;
static const int Y = (X + 10) * 5
static const int Z = ((Y + 8) + 0xfff) & ~0xfff

In C, these definitions throw error.
When I use #defines instead of the constants like

#define X (5+3);
#define Y (((X) + 10) * 5)
#define Z ((((Y) + 8) + 0xfff) & ~0xfff)

the C compiler complains about the definitions of “Y” and “Z”.

Could anyone please help me to find a solution for this.

Answer 1

You need to remove the semi-colon from the #define X line

#define X (5+3)
#define Y (((X) + 10) * 5)
#define Z ((((Y) + 8) + 0xfff) & ~0xfff)