36.
Determine Output:
void main()
{
      int i;
      char a[]=""; 
      if(printf("%sn", a))
            printf("Ok here n");
      else
            printf("Forget itn");
}

37.
Determine Output:
void main()
{
      int i=i++, j=j++, k=k++;
      printf("%d %d %d", i, j, k);
}

38.
Determine Output:
void main()
{
      static int i=i++, j=j++,  k=k++;
      printf("%d %d %d", i, j, k);
}

39.
Determine Output:
#define prod(a,b)  a*b
void main()
{
      int x=3, y=4;
      printf("%d", prod(x+2, y-1));
}

40.
Determine Output:
void main()
{
      char p[]="%dn";
      p[1] = 'c';
      printf(p, 65);
}