# The Industry's Foundation for High Performance Graphics

1. ## Hardcode a vertex

Hello, people. I have a function that outputs the x, y and z coordinates of a vertex after selecting it from 3D sphere mesh. Each vertex in my project also has an id. Now, I need a certain vertex, for example the vertex with the id=40 to move in a different direction, so I have to give it new x, y and z coordinates. Here is the function:

Code :
```void mouse(int button, int state, int x, int y)
{
GLint viewport[4];
GLdouble modelview[16],
projection[16];
GLfloat wx=x, wy, wz;
if(state!=GLUT_DOWN)
return;
if(button==GLUT_RIGHT_BUTTON)
exit(0);
glGetIntegerv(GL_VIEWPORT,viewport);
y=viewport[3]-y;
wy=y;
glGetDoublev(GL_MODELVIEW_MATRIX,modelview);
glGetDoublev(GL_PROJECTION_MATRIX,projection);
gluUnProject(wx,wy,wz,modelview,projection,viewport,&ox,&oy,&oz);
glutPostRedisplay();
printf("made pick on %f %f %f \n", ox, oy, oz);
pick(x,y);
Vertex.x=ox;
Vertex.y=oy;
Vertex.z=oz;
processhits (nhits, buffer);
if (vertexSelectat==40)
{
Vertex.x=-54.261713;
Vertex.y=-18.614050;
Vertex.z=-163.609310;
}

}```

In my project, Vertex is defined as follows:

Code :
```typedef struct Vertex {
float x, y, z;
int id;
} Vertex;```

After I build the project, I get 6 errors "syntax error: missing ';' before '.' after every line where I specify Vertex coordinates. I am new to both OpenGL and C++ so sorry if this is a silly question. Waiting for some help, thank you for your time . If you request, I can attach the whole project here.

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