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'noOfRegions' was not declared in this scope

Bopaki (407)
I am trying to compile an example program from Malik chapter 10: Election Results and I am getting the error below:

4 0 C:\Dev-Cpp\MalikChapter10\main.cpp In file included from main.cpp
52 20 C:\Dev-Cpp\MalikChapter10\candidateType.h [Error] 'noOfRegions' was not declared in this scope
C:\Dev-Cpp\MalikChapter10\main.cpp In function 'int main()':
32 16 C:\Dev-Cpp\MalikChapter10\main.cpp [Error] 'class orderedArrayListType<candidateType>' has no member named 'selectionSort'
42 15 C:\Dev-Cpp\MalikChapter10\main.cpp [Error] 'printHeading' was not declared in this scope
28 C:\Dev-Cpp\MalikChapter10\Makefile.win recipe for target 'main.o' failed


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 #ifndef CANDIDATETYPE_H
#define CANDIDATETYPE_H

#include "personType.h"

class candidateType : public personType
{
public:
	const candidateType& operator=(const candidateType&) ;
		//Overload the assignment operator for the objects of the type candidateType
		
	const candidateType& operator=(const personType&);
		//Overload the assignment operator for the object so that the value 
		//of an object of the type personType can be assigned to an object of the type candidateType
		
	void setVotes(int region, int votes);
		//Function to set the votes of a candidate for a particular region.
		//Postcondition: The votes specified by the paramenter votes
		//              are assigned to the region specified by the parameter region
	void updateVotesByRegion(int region, int votes);
		//Function to update the votes of a candidate for a particular region
		//Postcondition: The votes specified by the parameter votes are added to the region
		//specified by the parameter region.
	void calculateTotalVotes();
		//Function to calculate the total votes received by a candidate
		//Postcondition: The votes received in each region are added.
		
	int getTotalVotes();
		//Function to return the total votes received by a candidate.
		//Postcondition: The total votes received by the candidate are returned
		
	void printData() const;
		//Function to output the candidate's name, the votes received
		//in each region, and the total votes received.
//	void printResults(string cNames[], 
  //                int votesByRegion[][noOfRegions],
    //              int totalVotes[], int noOfRows);	
	candidateType();
		//default constructor
		//Postcondition: Initialize the votes received in each region,
		//              and the total votes received , to zero.
		
		//Overload the relational operators.
	bool operator==(const candidateType& right) const;
	bool operator!=(const candidateType& right) const;
	bool operator<=(const candidateType& right) const;
	bool operator<(const candidateType& right) const;
	bool operator>=(const candidateType& right) const;
	bool operator>(const candidateType& right) const;
	
private:
	int votesByRegion[noOfRegions];
	int totalVotes; 
};

#endif


Please help.
Chervil (7320)
It's hard to say. That header won't compile on its own. It requires (at least) the header

#include "personType.h"

Possibly there are other headers needed too?
Definitely something is missing, but it isn't clear what. without the full context.
Handy Andy (5051)
Hello Bopaki,

First this int votesByRegion[noOfRegions]; is not allowed and does not work. At compile time what is between the [] brackets needs to be a constant number so the compiler can know how much space to set aside for this array. This can be done with const int NOOFREGIONS{ 5 }; or the newer constexpr int NOOFREGIONS{ 5 }; or even #define NOOFREGIONS 5 .

By your error message it looks like "noOfRegions" is not defined anywhere before it is used in the class.

Hope that helps,

Andy
Bopaki (407)
Thank you both Chervil and Handy Andy.

I only had to add in this line:

 
 
const int noOfRegions = 4;


and everything worked fine.
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