C++ 普通宏函数与前置处理宏 使用示例

#include "stdafx.h"
typedef struct point3d
{
    float x;
    float y;
    float z;

}Point3d;

//宏函数
#define X(p,xValue)(p.x)=xValue;
//前置处理宏
#define Point3d_print(pd) \
    printf("(%f,%f,%f)", pd.x, pd.y, pd.z);

int _tmain(int argc, _TCHAR* argv[])
{
    Point3d pt = {0,0,0};
    X(pt, 0.1);
    Point3d_print(pt);
    return 0;
}