# FAQ: Operators: Lesson - Modulo

This community-built FAQ covers the “Modulo” exercise from the lesson “Operators: Lesson”.

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## FAQs on the exercise Modulo

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I think the solution should be:

endingDayOfWeek = daysThatPass % daysInWeek + 1;

Day 0 represents the 1st day of the week. If:

endingDayOfWeek = daysThatPass % daysInWeek;

and 1 day passes, it’s still the 1st day of the week. Which doesn’t make any sense.

Anyone knows what this code means or what it is saying. I tried looking at problem statement and I don’t understand what it’s talking about. I don’t feel it explains things clearly. Can anyone please help? Thx!

INPUT:

nt main() {

int endingDayOfWeek = 0;

int daysThatPass=2;

int daysInWeek=7;

printf(“You started on the 1st (0) day of the week, went %d days from this, so it is now the %d day of the week\n”, daysThatPass, endingDayOfWeek);

}

OUTPUT

You started on the 1st (0) day of the week, went 2 days from this, so it is now the 0 day of the week

If we examine the printf statement we see two variables after the string, and two placeholders %d, in the string. The variables are interpolated in the order in which they are written.

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