celociselne-deleni.c

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//Povolené knihovny:
#include <stdio.h>
#include <stdlib.h>

int deleni (int a, int b, int* r) {

  int podil = 0;//nesmime pouzivat % a /
  int zbytek = a;
  while (zbytek >= b) {
    podil++;
    zbytek -= b;
  }
  *r = zbytek;
  return podil;
}

#define DELENI(a,b) do {int p,r;p=deleni((a),(b),&r);printf("%+d : %+d = %+d (zbytek %+d)\n",(a),(b),p,r);}while(0)

//h0nza: ve stdlib.h je funkce div_t div(d,n); ktera toto resi!!! .quot, .rem
#define DIV(a,b) do {div_t q;q=div((a),(b));printf("%+d : %+d = %+d (.rem   %+d)\n",(a),(b),q.quot,q.rem);}while(0) 

int main(void) {
  DELENI(13, 4); DIV(13, 4);
  DELENI(12, 4); DIV(12, 4);
  DELENI( 3, 4);
  DELENI(-13, 4);//nefunguje!!!
     DIV(-13, 4);
  DELENI( 13,-4);//nefunguje!!!
     DIV( 13,-4);
  DELENI(-13,-4);//nefunguje!!!
     DIV(-13,-4);
  return EXIT_SUCCESS;
}