Click here to Skip to main content
15,893,486 members

variables and scopes in c++ problem

Ali++paco# asked:

Open original thread
what's up guys?
ummm can u take a look to my program please
C++
//bona.h


class SLList;
class student 
{
	char FullName [100];
	float FinalMark ;
	int ArrayOfWishes[3];
	student *next;
public:
	student();
	student(char[],float,int[]);
	student(const student&);
	~student();
	void set_name(char[]);
	void set_final_mark(float);
	void set_wishes(int,int,int );
	friend class SLList;
	friend void print(student&);
	friend void AccepteInWill(student&,int);
	const char* getName(){return FullName;}
	float getMark(){return FinalMark;}
	int getWish(int a){return ArrayOfWishes[a];}

};
class SLList
{
	student*head;
public:
	SLList();
	~SLList();
	void AddToList(student*);
	bool IsEmpty();
};
void AccepteInWill(student&,int);
void test_vality_of_wish(int,int,int,int,int,int,int,int,int,int);
//************************************************
// bona.cpp
#include"bona.h"
#include < iostream >
#include < cstring >
using namespace std;
student::student()
{
	FullName[100]=NULL;
	FinalMark=NULL;
	ArrayOfWishes[3]=NULL;
	next=NULL;
}
student::student(char name[],float mark,int a[])
{
	set_name(name);
	set_final_mark(mark);
	set_wishes(a[0],a[1],a[2]);
	next=NULL;

}
student::student(const student&s)
{
	strcpy(FullName,s.FullName);
	FinalMark=s.FinalMark;
	ArrayOfWishes[0]=s.ArrayOfWishes[0];
	ArrayOfWishes[1]=s.ArrayOfWishes[1];
	ArrayOfWishes[2]=s.ArrayOfWishes[2];
}
student::~student()
{
	for(int i=0;i<sizeof(fullname);i++)>
		FullName[i]=NULL;
	FinalMark=0;
	for(int i=0;i<3;i++)
		ArrayOfWishes[i]=0;

}
void student::set_name(char name[])
{
	strcpy(FullName,name);}
void student::set_final_mark(float mark)
{
	if(mark>=60&&mark<=100)
		FinalMark=mark;
	else
		throw invalid_argument("invalid mark");
}
void student::set_wishes(int a1,int a2,int a3)
{
	if((a1>=1&&a1<=8)&&(a2>=1&&a2<=8)&&(a3>=1&&a2<=8))
	{
		ArrayOfWishes[0]=a1;
		ArrayOfWishes[1]=a2;
		ArrayOfWishes[2]=a3;
	}
	else throw invalid_argument("wish number 1,wish number 2 or/and wish number 3 are invalid input");
}
SLList::SLList()
{
	head=NULL;
}
SLList::~SLList()
{
	student*i=head;
	while(!IsEmpty())
	{
		i=i->next;
		delete i;
		head=i;
	}

}
bool SLList::IsEmpty()
{
	if(head=NULL)
		return true;
	else
		return false;
}

void SLList::AddToList(student*s)
{
	if(IsEmpty())
		head=s;
	else
	{
		student*i,*j;
		i=head;
		j=i->next;
		while(j!=NULL)
		{
			if(((s->getMark()) >( i->getMark()) )&&((s->getMark()) <( j->getMark())))
			{
				s->next=j;
				i->next=s;
			}
		}
	}
}
void test_vality_of_wish(int u,int a,int b,int c,int d,int e,int f,int g,int h,int q,student& i)
{
	if(u<=3)
	{
		static int j1=1,j2=1,j3=1,j4=1,j5=1,j6=1,j7=1,j8=1,j9=1;
		switch(i.getWish(u))
		{
				case (1):
					if(j1<=a)
					{

							AccepteInWill(i,1);
							j1=j1+1;
					}
					else
						test_vality_of_wish(u+1,a,b,c,d,e,f,g,h,q,i);
					break;
				case(2):
					if(j2<=b)
					{

							AccepteInWill(i,2);
							j2=j2+1;
					}
					else
						test_vality_of_wish(u+1,a,b,c,d,e,f,g,h,q,i);
					break;
				case(3):	
					if(j3<=c)
					{

							AccepteInWill(i,3);
							j3=j3+1;
					}
					else
						test_vality_of_wish(u+1,a,b,c,d,e,f,g,h,q,i);
					break;
				case(4):
						if(j4<=d)
					{

							AccepteInWill(i,4);
							j4=j4+1;
					}
					else
						test_vality_of_wish(u+1,a,b,c,d,e,f,g,h,q,i);
					break;
				case(5):
					if(j5<=e)
					{

							AccepteInWill(i,5);
							j5=j5+1;
					}
					else
						test_vality_of_wish(u+1,a,b,c,d,e,f,g,h,q,i);
					break;
				case(6):
					if(j6<=f)
					{

							AccepteInWill(i,6);
							j6=j6+1;
					}
					else
						test_vality_of_wish(u+1,a,b,c,d,e,f,g,h,q,i);
					break;
				case(7):
					if(j7<=g)
					{

							AccepteInWill(i,7);
							j7=j7+1;
					}
					else
						test_vality_of_wish(u+1,a,b,c,d,e,f,g,h,q,i);
					break;
				case(8):
					if(j8<=h)
					{

							AccepteInWill(i,8);
							j8=j8+1;
					}
					else
						test_vality_of_wish(u+1,a,b,c,d,e,f,g,h,q,i);
					break;
	}
	}
}


	
/////****************************************////
//main.cpp
#include<iostream>
#include"bona.h"
using namespace std;
int main()
{

	int a=0,b=0,c=0,d=0,e=0,f=0,g=0,h=0,all_student=0;
	student*wishNumber1=new student[a];
	student*wishNumber2=new student[b];
	student*wishNumber3=new student[c];
	student*wishNumber4=new student[d];
	student*wishNumber5=new student[e];
	student*wishNumber6=new student[f];
	student*wishNumber7=new student[g];
	student*wishNumber8=new student[h];
	student*Denied_student=new student[(all_student-a-b-c-d-e-f-g)];
	return 0;
}

my problem is: as u can see the function test_vality_of_wish needs more than three parameters , and i tried to use the (extern) keyword but it didnt work
i'm kinda lost .
can anyone give any advice .
Tags: C++

Plain Text
ASM
ASP
ASP.NET
BASIC
BAT
C#
C++
COBOL
CoffeeScript
CSS
Dart
dbase
F#
FORTRAN
HTML
Java
Javascript
Kotlin
Lua
MIDL
MSIL
ObjectiveC
Pascal
PERL
PHP
PowerShell
Python
Razor
Ruby
Scala
Shell
SLN
SQL
Swift
T4
Terminal
TypeScript
VB
VBScript
XML
YAML

Preview



When answering a question please:
  1. Read the question carefully.
  2. Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
  3. If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
  4. Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.
Let's work to help developers, not make them feel stupid.
Please note that all posts will be submitted under the http://www.codeproject.com/info/cpol10.aspx.



CodeProject, 20 Bay Street, 11th Floor Toronto, Ontario, Canada M5J 2N8 +1 (416) 849-8900