How to make the mod of a negative number to be positive?

Question

Basically, I need (-3) % 5 to be \"2\" instead of \"-3\". Python produces \"2\", but C++ produces \"-3\". Not sure how to produce \"2\" in C++. Thanks!

Answer 1

int x=-3;

// first approach
cout<<((x % 5) + 5) % 5;

//second approach means just reverse the number modNum%x
cout<<5%x;