HackerRank C- Pointers in C

You have to complete the function void update(int *a,int *b), which reads two integers as argument, and sets with the sum of them, and b with the absolute difference of them.

  1. #include <stdio.h>
  2. void update(int *a,int *b) {
  3. *a=*a+(*b);
  4. *b=(*a)-(*b)-(*b);
  5. if(*b<0)
  6. {
  7. *b=*b*(-1);
  8. }
  9. }
  10. int main() {
  11. int a, b;
  12. int *pa = &a, *pb = &b;
  13. scanf("%d %d", &a, &b);
  14. update(pa, pb);
  15. printf("%d\n%d", a, b);
  16. return 0;
  17. }
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