Macro Function防止重?定?

akira32

Macro function防止重?定?
#ifndef SAFE_DELETE
#define SAFE_DELETE(p) { if(p) { delete (p); (p)=NULL; } }
#endif//SAFE_DELETE

?楹尾荒??
#ifndef SAFE_DELETE(p)

如果有另一??
#define SAFE_DELETE(p,p2) { if(p) { delete (p); (p)=NULL; } }

那?
#ifndef SAFE_DELETE
就?醯?AFE_DELETE(p)?SAFE_DELETE(p,p2)

希望大家看得懂我所表?的意思

NewPro

MACRO
u want redefine ?

ljm

宏和函数是两码事

sanikoyes

宏不是函数，不能重载。