Creating a program that counts 00-77

[gvillebrown]

So, this is for a school project. I am attempting to create a program that counts from 00 - 77 in octal. I was given a base code, and told to modify it. So far, this is what I have, but my code is starting at 07 instead of 00. Any help would be appreciated.

#include <iostream>
using namespace std;

int main()
{
	for (int i = 0; i < 8; i++)
		for (int j = i; j < 8; j++)
			
				cout << i << j << "\n";

	system("pause");
	return 0;
}

[gvillebrown]

This is the original code that I was to edit. It counts in binary.

int main()
{
	for(int i = 0; i < 2; i++)
		for(int j = 0; j < 2; j++)
			for(int k = 0; k < 2; k++)
				cout << i << j << k << "\n";

	system("pause");
	return 0;
}

[lastchance]

		for (int j = 0; j < 8; j++)
		             ^

[gvillebrown]

Thank you for the help. I've modified the program as you've suggested, but now it starts at 43.

[lastchance]

Are you sure you are looking at the same program?

Run the program in your first post in cpp.sh (the little gear-wheel icon at top-right of it).

Oh no ... don't tell me ... you are running in some dodgy IDE that only prints out the last so many lines!

[keskiverto]

What are you talking about? You code does start from 00.
It does not show all numbers in the range.

Please, explain the line 7 for us.


Could you also explain any of this:

#include <iostream>
#include <iomanip>

int main() {
  std::cout.fill( '0' );
  std::cout << std::oct;
  for ( int value = 0; value < 0100; ++value ) {
    std::cout << std::setw( 2 ) << value << '\n';
  }
}

(While it might give desired output, this code is not what you must write.)



EDIT

my code is starting at 07
...
now it starts at 43.

Let me guess: You look at last N lines of the output of the program. Either your terminal does not let you scroll back (enough), or you did not realize that you can do so.

[gvillebrown]

I apologize, I am very new to c++. This is my assignment as given from my instructor:

#include <iostream>
using namespace std;

int main()
{
	for(int i = 0; i < 2; i++)
		for(int j = 0; j < 2; j++)
			for(int k = 0; k < 2; k++)
				cout << i << j << k << "\n";

	system("pause");
	return 0;
}

"Type the program above in and run it. This program counts from 000 to 111 in Binary (0 – 7 Decimal) using only digits 0 – 1. A related numbering system is Octal, and uses the digits 0 – 7. Modify the program above to count from 00 to 77 in Octal (0 – 63 Decimal). Hint: You will only need 2 for loops instead of 3."

[lastchance]

There's not much wrong with your program.

Your IDE is just useless.

Please read the ends of mine and Keskiverto's posts.

[E0p9LyTq]

#include <iostream>

int main()
{
   for (unsigned int i = 0; i < 8; i++)
   {
      for (unsigned int j = 0; j < 8; j++)
      {
         std::cout << i << j << '\t';
      }
      std::cout << '\n';
   }
}

00      01      02      03      04      05      06      07
10      11      12      13      14      15      16      17
20      21      22      23      24      25      26      27
30      31      32      33      34      35      36      37
40      41      42      43      44      45      46      47
50      51      52      53      54      55      56      57
60      61      62      63      64      65      66      67
70      71      72      73      74      75      76      77