Thread: Quick printf question

I think this is a very simple question but I haven't been able to find the answer in my book.

This is how I want the output to look

Code:

00
01
02
03
....

but I am getting

Code:

 
0
1
2
3
...

my printf command looks like

Code:

printf("Process %2d of %d on %s\n", rank, size, name);

I thought the 2 preceding the first d would force the width of the first printed int to be two digits wide. Apparently I am missing something. Thanks in advance.

EDIT: I got it to work with this method

Code:

if (rank < 9) {
		printf("Process %d%d of %d on %s\n", 0, rank, size, name);
	}
else {
		printf("Process %2d of %d on %s\n", rank, size, name);
	}

but there has to be an easier way than this.

It CAN force that - does on my compiler, but you need to add a 0 before the 2.

In any case, you have an error, since there should be three values printed per line, not one. Check that out and see what those values are.

Code:

printf("Process %02d of %d on %s\n", rank, size, name);

Kindly use like %02d in the printf as mentioned above in your code