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What do these errors mean?

VisuAlly (35)
I'm getting weird errors I don't understand with this program.
This program is the second part in a three-part assignment. So it's not meant to work, but it IS meant to compile.
Part of the assignment was also to have two separate files, a normal code file and a header file. So that's why there's two.
So, what do these errors mean?


abs9166@puss:/tmp1/abs9166/Desktop$ g++ program5.cpp sketch.h -lGL -lGLU -lglut -lm
In file inclded from program5.cpp:5:0:
sketch.h:33:8: error: making 'n' static [-fpermissive]
sketch.h:33:8: error: ISO C++ forbids in-class initialization of non-const static member 'n'
program5.cpp:46:49: error: 'y1' is not a type
program5.cpp: In member function 'void Sketch::CreateObject(int, int, int, int):
program5.cpp:51:34: error: invalid conversion from 'double (*)(double)throw ()' to 'int' [-fpermissive]
program5.cpp:53:34: error: invalid conversion from 'double (*)(double)throw ()' to 'int' [-fpermissive]
program5.cpp: In member function 'void Sketch::UpdateObject(int, int)':
program5.cpp:82:22: error: 'struct Object' has no member named 'toolType'
program5.cpp:96:8: error: jump to case label [-fpermissive]
program5.cpp:92:8: error:     crosses initialization of 'int r'
program5.cpp:91:8: error:     crosses initialization of 'int y2'
program5.cpp:90:8: error:     crosses initialization of 'int x2'
program5.cpp:89:8: error:     crosses initialization of 'int y1'
program5.cpp:88:8: error:     crosses initialization of 'int x1'
sketch.h:33:8: error: ISO C++ forbids initialization of member 'n' [-fpermissive]
sketch.h:33:8: error: making 'n' static [-fpermissive]
sketch.h:33;8: error: ISO C++ forbids in-class initialization of non-const static member 'n'
abs9166@puss:/tmp1/abs9166/Desktop$


This is the main file.
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  #include <GL/gl.h>
#include <GL/glu.h>
#include <GL/glut.h>

#include "sketch.h"

#include <string>
#include <iostream>
#include <fstream>
#include <cmath>
using namespace std;

#define PI 3.1415926536

#define WIDTH    	700
#define HEIGHT   	600

#define MENUWIDTH 	100
#define BOXHEIGHT	(HEIGHT/NCOLORS)

#define DSLEFT    	MENUWIDTH
#define DSRIGHT  	WIDTH
#define DSBOTTOM  	0
#define DSTOP     	HEIGHT

#define NCOLORS 	8

#define RGBRED 		1, 0, 0
#define	RGBGREEN	0, 1, 0
#define RGBBLUE		0, 0, 1
#define RGBYELLOW	1, 1, 0
#define RGBMAGENTA	1, 0, 1
#define RGBCYAN		0, 1, 1
#define RGBBLACK	0, 0, 0
#define RGBWHITE	1, 1, 1

#define R		0
#define G		1
#define B		2

Sketch sketcher;

static float colormenu[8][3] = {{RGBRED}, {RGBGREEN}, {RGBBLUE}, {RGBYELLOW}, {RGBMAGENTA}, {RGBCYAN}, {RGBWHITE}, {RGBBLACK}};

//Line
void Sketch::CreateObject(int c, int t, int x1, y1)
{
	objects[n].colortype=c;
	objects[n].tooltype=t;
	objects[n].tool.endpoints.pt1.x=x1;
	objects[n].tool.endpoints.pt1.y=y1;
	objects[n].tool.endpoints.pt2.x=x1;
	objects[n].tool.endpoints.pt2.y=y1;
	n++;
}

//Rectangle
void Sketch::CreateObject(int c, int t, int x1, int y1, int x2, int y2)
{
	objects[n].colortype=c;
	objects[n].tooltype=t;
	objects[n].tool.endpoints.pt1.x=x1;
	objects[n].tool.endpoints.pt1.y=y1;
	objects[n].tool.endpoints.pt2.x=x2;
	objects[n].tool.endpoints.pt2.y=y2;
	n++;
}

//Circle
void Sketch::CreateObject(int c, int t, int r, int x1, int y1)
{
	objects[n].colortype=c;
	objects[n].tooltype=t;
	objects[n].tool.circle.radius=r;
	objects[n].tool.circle.center.x=x1;
	objects[n].tool.circle.center.y=y1;
	n++;
}

void Sketch::UpdateObject(int _x, int _y)
{
	switch(objects[n-1].toolType)
	{
		case 0:
		case 1:
		case 2:
		case 3:
			int x1=objects[n-1].tool.circle.center.x;
			int y1=objects[n-1].tool.circle.center.y;
			int x2=_x;
			int y2=_y;
			int r=sqrt(pow(x2-x1,2)+pow(y2-y1,2));
			objects[n-1].tool.circle.radius=r;
			cout<<"Circle is updated"<<endl;
			break;
		case 4:
			objects[n-1].tool.endpoints.pt2.x=_x;
			objects[n-1].tool.endpoints.pt2.y=_y;
			cout<<"Line/Rect is updated"<<endl;
			break;			
	}
}

void Sketch::Load()
{
	string filename;
	ifstream fin;
	cout<<"Load: ";
	cin>>filename;
	fin.open(filename.c_str());
	if (fin.is_open())
	{		
		while (fin.good())
		{
			fin>>n;
			for(int i=0; i<n; i++)
			{
				fin>>objects[i].colortype;
				fin>>objects[i].tooltype;
				if(objects[i].tooltype==2 || objects[i].tooltype==3)
				{
				  fin>>objects[i].tool.circle.center.x;
				  fin>>objects[i].tool.circle.center.y;
				  fin>>objects[i].tool.circle.radius;
				}
				else
				{
				  fin>>objects[i].tool.endpoints.pt1.x;
				  fin>>objects[i].tool.endpoints.pt1.y;
				  fin>>objects[i].tool.endpoints.pt2.x;
				  fin>>objects[i].tool.endpoints.pt2.y;
				}
			}
		}
	}
	else{cout<<"Load failed";}
}

void Sketch::Save()
{
	string filename;
	ofstream fout;
	cout<<"Save as: ";
	cin>>filename;
	fout.open(filename.c_str());
	if(fout.is_open())
	{
		fout<<n<<" ";
		for(int i=0; i<n; i++)
		{
			fout<<objects[i].colortype<<" "<<objects[i].tooltype<<" ";
			if(objects[i].tooltype==2 || objects[i].tooltype==3)
			{
				fout<<objects[i].tool.circle.center.x<<" ";
				fout<<objects[i].tool.circle.center.y<<" ";
				fout<<objects[i].tool.circle.radius<<" ";
			}
			else
			{
				fout<<objects[i].tool.endpoints.pt1.x<<" ";
				fout<<objects[i].tool.endpoints.pt1.y<<" ";
				fout<<objects[i].tool.endpoints.pt2.x<<" ";
				fout<<objects[i].tool.endpoints.pt2.y<<" ";
			}
		fout<<endl;
		}
	}
	
}

void Sketch::Clear()
{
	n=0; 
	glutPostRedisplay;
}

void Sketch::drawRectangle(int index, GLint type)
{
	int c = objects[index].colortype;
	int x1 = objects[index].tool.endpoints.pt1.x;
	int y1 = objects[index].tool.endpoints.pt1.y;
	int x2 = objects[index].tool.endpoints.pt2.x;
	int y2 = objects[index].tool.endpoints.pt2.y;

	glColor3f(colormenu[c][R], colormenu[c][G], colormenu[c][B]);

	glBegin(type);
		glVertex2i(x1,y1);
		glVertex2i(x1,y2);
		glVertex2i(x2,y2);
		glVertex2i(x2,y1);
	glEnd();
}


void Circle(GLint type)
{
	int i=36;                 
  	float angle;
  	float anglecounter= 2*PI/i; 
        
   	glBegin(type);
    	for(int k=0; k<i; k++)
	{
      		angle = k*anglecounter;
      		glVertex2f(cos(angle),sin(angle));
    	}
  	glEnd(); 
}

void Sketch::drawCircle(int index, GLint type)
{
	int c=objects[index].colortype;
	int x=objects[index].tool.circle.center.x;
	int y=objects[index].tool.circle.center.y;
	float r=objects[index].tool.circle.radius;

	glColor3f(colormenu[c][R], colormenu[c][G], colormenu[c][B]);

	glPushMatrix();
		glTranslatef(x,y,0);
		glScalef(r,r,1);
		Circle(type);
	glPopMatrix();
}

void Sketch::drawLine(int index)
{
	int c=objects[index].colortype;
	int x1=objects[index].tool.endpoints.pt1.x;
	int y1=objects[index].tool.endpoints.pt1.y;
	int x2=objects[index].tool.endpoints.pt2.x;
	int y2=objects[index].tool.endpoints.pt2.y;

	glColor3f(colormenu[c][R], colormenu[c][G], colormenu[c][B]);

	glBegin(GL_LINE_LOOP);
		glVertex2i(x1,y1);
		glVertex2i(x2,y2);
	glEnd();	
}

void Sketch::draw()
{
	for(int i=0; i<n; i++)
	{
		switch(objects[i].tooltype)
		{
			case 0: drawRectangle(i, GL_LINE_LOOP);
				break;

			case 1: drawRectangle(i, GL_POLYGON);
				break;

			case 2: drawCircle(i, GL_LINE_LOOP);
				break;

			case 3: drawCircle(i, GL_POLYGON);
				break;

			case 4: drawLine(i);
				break;

			case 5: drawLine(i);
				break;
		}
	}
	glutPostRedisplay();
}


This is the header file.
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#  include <GL/gl.h>
#  include <GL/glu.h>
#  include <GL/glut.h>

struct Point
{int x,y;};

struct EndPoint
{Point pt1, pt2;};
	
struct Circle
{
	Point center;
	int radius;
};

union Tool
{
	EndPoint endpoints;
	Circle circle;
};

struct Object
{
	short int colortype;
	short int tooltype;
	Tool tool;
};

class Sketch
{
	Object objects[10000];
	int n=0;
		public:
		void CreateObject(int, int, int, int);
		void CreateObject(int, int, int, int, int);
		void CreateObject(int, int, int, int, int, int);
		void UpdateObject(int, int);
		void Save();
		void Load();
		void Clear();
		void drawRectangle(int, GLint);
		void drawCircle(int, GLint);
		void drawLine(int);
		void draw();	
};


Please help me! I've been having a lot of trouble with this program and I would like to be finished with it today. I really appreciate the help!
wildblue (1505)
This should take care of some of those...

You're missing the type for y1 here.
program5.cpp:46:49: error: 'y1' is not a type
void Sketch::CreateObject(int c, int t, int x1, y1)

Spelling difference here.
program5.cpp:82:22: error: 'struct Object' has no member named 'toolType'
short int tooltype;


Edit:

error: ISO C++ forbids in-class initialization of non-const static member 'n'

See this previous answer for a similar problem.
http://www.cplusplus.com/forum/beginner/100701/


program5.cpp:92:8: error:     crosses initialization of 'int r'

See this thread over on StackOverflow
http://stackoverflow.com/questions/2392655/what-are-the-signs-of-crosses-initialization
Last edited on
VisuAlly (35)
Ahh, alright I see. Thank you very much! Those are very helpful.
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