C++ newbie need quick pointers with loops.

[diabolyte]

hi all,
i'm trying to display a sequence of numbers in rows of five using the for loop and it should look like this:

The numbers between 5 and 100 that are divisible by 7 are:

7, 14, 21, 28, 35,

42, 49, 56, 63, 70,

77, 84, 91, 98,


but whatever I try i keep on getting this:


7, 14, 21, 28, 35, 42, 49, 56, 63, 70, 77, 84, 91, 98,

I tried putting another loop inside my loop to limit each output to 5 numbers in each row but for some reason it doesn't work. what do I need to do?

[jsmith]

You need to post your code, because the algorithm sounds right, its just the implementation must be wrong.

[bluegray]

This isn't perfect but it works. There is still more formatting you could do if you wanted.

#include <iostream>

using namespace std;

int main () 
{
	int j,num = 0;

	for(int i = 1; i < 15; i++)
	{
		num = i * 7;
		cout << num << ", ";
		if (++j >= 5)
		{
			j = 0;
			cout << endl;
		}
		
	}

    
	return 0;
}

Output will look like
7, 14, 21, 28, 35,
42, 49, 56, 63, 70,
77, 84, 91, 98,

[diabolyte]

Thank you bluegray. after implementing your code my program works perfectly now. my error was using postfix increment rather than the prefix. they're so confusing. I don't have a clue how to use them in loops. but looks like i'll have to go learn them now. anywayz, thank you again for bailing out a noob, saved me a ton of time not doing trial and error.