Help finding number of entries in structure array

iblink · #1 03-Nov-2009, 14:37

Hello. I have declared a structure array of a defined structure. Now i want to know how to find the number of entries i have in the array. The array is below.

CPP / C++ / C Code:

#define MAXEMPLOYEE 300

int main()
{
	struct  employeeInfo{
           int depCode;
           int empNr;
           char firstName[12];
           char lastName[12];
           int age;
	};
	struct employeeInfo  allEmployee[MAXEMPLOYEE];

I want to know the number of employee entries i have in the array allEmployee[] at any given time. Thank you in advance

fakepoo · #2 03-Nov-2009, 15:06

Well, the easy answer is 300.

But, what I'm guessing is that you want to be able to hold a maximum of 300 of them but initially zero. One way to do it is to declare a variable to hold the count. When you decide to add an employee, increment the count. Like:

CPP / C++ / C Code:

#define MAXEMPLOYEE 300

int main()
{
	struct  employeeInfo{
           int depCode;
           int empNr;
           char firstName[12];
           char lastName[12];
           int age;
	};

	struct employeeInfo  allEmployee[MAXEMPLOYEE];
	int employeeCount = 0;

	// Add the first employee
	employee[employeeCount].depCode = 1;
	employee[employeeCount].empNr = 1;
	strcpy(employee[employeeCount].firstName, "Eddie");
	strcpy(employee[employeeCount].lastName, "Haskell");
	employee[employeeCount].age = 65;
	++employeeCount;

iblink · #3 03-Nov-2009, 15:48

Assuming i use your method to add a certain number of employees. And i want to know now how many employees i have in the array allEmployee[]. How do i do that?

fakepoo · #4 03-Nov-2009, 18:31

Quote:

Originally Posted by iblink

Assuming i use your method to add a certain number of employees. And i want to know now how many employees i have in the array allEmployee[]. How do i do that?

Every time you add an employee, increment the count like we did in the example:

CPP / C++ / C Code:

++employeeCount;

If you want to know how many employees you have entered in, that number is now in employeeCount.

Maybe I am not understanding your question. Does this make sense?

iblink · #5 03-Nov-2009, 23:15

A bit embarrassed to say i didn't get what you meant until now.. Thanks a lot

fakepoo · #6 04-Nov-2009, 10:49

Quote:

Originally Posted by iblink

A bit embarrassed to say i didn't get what you meant until now.. Thanks a lot

No reason to get embarrassed. At one point I, too, did not have a good grasp of structures and arrays. Just keep practicing.

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Help finding number of entries in structure array

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