What is out put?

Question

int m=10,n=5;
int *mp, *np;
mp = &m;
np = &n;
*mp += *np;
*np = *mp - *np;
printf("%d %d \n%d %d\n", m, *mp, n, *np) ;

Answer 1

Just run in code playground and see output

Answer 2

15 15
10 10
I think that!

Answer 3

15 15
5 5