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  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4.  
  5. int a,b,p,q,dem=0;
  6. printf("nhap a : \n");
  7. scanf("%d",&a);
  8. printf("nhap b : \n");
  9. scanf("%d",&b);
  10. printf("nhap p: \n");
  11. scanf("%d",&p);
  12. printf("nhap q: \n");
  13. scanf("%d",&q);
  14. for(int i=a;i<=b;i++)
  15. if(i%p==q)
  16. {
  17. dem++;
  18. }
  19. printf("KQ",dem);
  20. return 0;
  21. }
  22.  
Success #stdin #stdout 0s 10320KB
stdin
3
6
2
5

stdout
nhap a : 
nhap b : 
nhap p: 
nhap q: 
KQ