spiderling66
Programmer
hi guys.
i hava no idea why the macro is unsafe, i just want the number(x) is always positive. could anyone tell me why, please?
#define number(x) x < 0 ? -x : x
i hava no idea why the macro is unsafe, i just want the number(x) is always positive. could anyone tell me why, please?
#define number(x) x < 0 ? -x : x