Thread: Static vs. Automatic Variables

Hi,

I'm trying to get the second call to SumNumbers a value other than 0. I think that the second call to SumNumber is 0 just like the first call because I have "static int cnt = 0;". I don't know how to change my program to get the second call to say 1. Here is my code:

Code:

#include <iostream>
#include <fstream>
using namespace std;
int sum;
void SumNumbers();
ifstream NumData;
void main()
{//block 1
	SumNumbers();
	cout << "Call 1: the sum of the numbers is " << sum << endl;
	SumNumbers();
	cout << "Call 2: the sum of the numbers is " << sum << endl;
}
void SumNumbers()
{//block 2
	NumData.open("numbers.dat");
	sum = 0;
	int num;
	static int cnt = 0;
	NumData >> num;
	while (cnt <=4)
	{//block 3
		sum = sum + num;
		cnt++;
		
	}
}

Thanks!

Code:

int sum;  
void SumNumbers();
ifstream NumData;

void main()

1)Don't ever declare a variable outside of a function. Either declare it in main() or another function.
2)Here is the program template for all beginning programmers:

Code:

#include<iostream>
using namespace std;

int main()
{



	return 0;
}

All of your programs should contain that code. Fill in any other code you need.

just FYI, the 'return 0;' at the end of main() is implicit.

Originally Posted by miken

just FYI, the 'return 0;' at the end of main() is implicit.

It's still good form to write it lest you try to do the same in any other function