For loop problem

[EwCjE3v7]

I was just transforming a while loop into a for loop.to learn my for loops

working while loops

#include <iostream> 
using namespace std;

int main() 
{
	int sum = 0, value = 0;
	while (cin >> value)
	{
		sum += value;
	cout << "Sum is: " << sum << endl;
	}
	system("PAUSE");
	return 0;
}

for loop (not working)

#include <iostream> 
using namespace std;

int main() 
{
	

	for (int sum = 0, val = 0; cin >> val; sum += val)
		cout << "Sum is: " << sum << endl;
	system("PAUSE");
	return 0;
}

[vlad from moscow]

That the loops would be identical you can write

	for (int sum = 0, val = 0; cin >> val; /* empty */ )
	{
		sum += val;
		cout << "Sum is: " << sum << endl;
	}

[EwCjE3v7]

Thanks it worked...thanks

[vlad from moscow]

By the way I wrote a post about some loops here

http://cpp.forum24.ru/?1-3-0-00000059-000-0-0-1359294292

Though it is written in Russian however you can use for example the google translator that to read the post.

[EwCjE3v7]

Thanks