How to always make a print of 4 figures in C

Question

I am working on a project for university. One of the small things that make me lose points is that my answer is correct but it doesn't have four figure number.

For example say I print my answer which is 17 and on other test files it could change to 6. Is there a way I can ensure that it would always print either

0017 -> testfile_1
0006 -> testfile_2
0123 -> testfile_3

so it always has four digits no matter what the solution is? I made lots of test cases to check if the value is a single number or multiple to work it out but is there a simple way to do this so it automatically adds the zeros?

Read e.g. [this `printf` (and family) reference](http://en.cppreference.com/w/c/io/fprintf). — Some programmer dude, Oct 12 '15 at 11:55

score 1 · Accepted Answer · edited Jan 10 '17 at 23:08

1

Try to use

printf( "%04d", myValue);

04 will make sure that your myValue will always have, at least, 4 digits.

edited Jan 10 '17 at 23:08

answered Oct 12 '15 at 11:55

Rahul Tripathi

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5

...at least 4 digits. – CiaPan Oct 12 '15 at 11:56

score 1 · Answer 2 · answered Oct 12 '15 at 11:57

1

You can specify how many numbers printf should print, like so:

printf("%04d",someint);

How to always make a print of 4 figures in C

2 Answers2