שפת C/ביטויים בוליאניים ותנאים/תרגילים

#include <stdio.h>
 
 
int main()
{
    float num;
 
  scanf("%f", &num);
 
  if(num < 0)
     printf("-1");
  else if(num == 0)
  printf("0");
  else
     printf("1");
 
  return 0;
}

#include <stdio.h>
 
 
int main()
{
  int num;
 
  scanf("%d", &num);
 
  printf("%d", num % 2);
 
  return 0;
}

#include <stdio.h>
 
 
int main()
{
  int num;
 
  scanf("%d", &num);
 
  switch(num % 3)
  {
  case 0:
    printf("%d divides by 3", num);
    break;
  case 1:
    printf("%d -1 divides by 3", num);
    break;
  case 2:
    printf("%d +1 divides by 3", num);
    break;
  };
 
  return 0;
}