Question

C++命名空间错误error C2653: 'create' : is not a class or namespace name

头文件：
#ifdef struc_h
#define struc_h
class create
{
public:
void dramobj();
};
#endif
cpp文件：
#include <windows.h>
#include <stdio.h>
#include <gl/gl.h>
#include "struct.h"

typedef struct
{
float x,y,z,p;
}vertex;

typedef struct
{
int verts;
vertex *points;
}object;

void objallocate(object *k,int n) // 申请内存空间
{
k->points=(vertex*)malloc(sizeof(vertex)*n);
}

void objfree(object *k)
{
free(k->points);
}
object m;

void readstr(FILE *f,char *strings)
{
do
{
fgets(strings, 255, f);
} while ((strings[0] == '/') || (strings[0] == '\n'));
return;
}

void objload(char *name,object *k)
{
int ver;
float rx,ry,rz,rp;
FILE *filein;
char oneline[255];

filein = fopen("in1t.txt", "rt");

readstr(filein,oneline);
sscanf(oneline, "Vertices: %d\n", &ver);
k->verts=ver;
objallocate(k,ver); // 申请内存空间

for (int i=0;i<ver;i++)
{
readstr(filein,oneline);
sscanf(oneline, "%f %f %f", &rx, &ry, &rz,&rp);
k->points[i].x = rx;
k->points[i].y = ry;
k->points[i].z = rz;
k->points[i].p=rz;
}
fclose(filein);

}

void create::dramobj ()
{
GLfloat tx,ty,tz,tp;
vertex q;

objload("in5t",&m);//导入模型
glBegin (GL_POINTS);
for(int s=0;s<m.verts;s++)
{
tx=q.x;
ty=q.y;
tz=q.z;
tp=q.p;

glColor3f(tp/350,tp/350,tp/350);
glVertex3f (tx,ty,tz);

}
glEnd();
}不知道是哪里错了，老是提示命名空间错误，求高手帮忙

Answer 1

头文件错了！
#ifdef 表示如果定义了往后执行，显然之前struc_h是未定义的！

修改：
#ifndef struc_h
#define struc_h
class create
{
public:
void dramobj();
};
#endif
----------
头文件防止重定义作法：
#ifndef _some
#define _some
//...
#endif

Answer 2

修改：
#ifndef struc_h
#define struc_h
class create
{
public:
void dramobj();
};
#endif
----------
头文件防止重定义作法：
#ifndef _some
#define _some
//...
#endif

Answer 3

cpp文件有问题