Write a program by declaring a structure Point with two integer values for its position x and y. Now write a function that finds slope of a line drawn out of two points that are passed as structure argument to this function. Show implementation of this function and structure in the main routine assuming suitable values of x and y being initialised for two points.

Write the output of the following program depicting structure instances being called as value and called as reference to a function.

struct Sale {int ID; float value;};
void sc(Sale a,Sale &b)
{
a.ID=a.ID+1;
a.value=a.value+100;
b=a;
}
int main()
{
  Sale zone1={1,400.50},zone2;
  sc(zone1,zone2);
  cout<<"Zone 1 (ID, value) = "<<zone1.ID<<", "<<zone1.value<<endl;
  cout<<"Zone 2 (ID, value) = "<<zone2.ID<<", "<<zone2.value<<endl;
  return 0;
}

Write down the output of the program and give steps in arriving at such output.

struct Pix {int x,y;};
void show(Pix &p)
{
  cout<<p.x++<<","<<++p.y<<endl;
}
int main()
{
  Pix P={50,60},Q,R;
  R=P;
  show(R);
  P.x+=10;P.y+=30;
  Q=R;
  show(P); show(Q); show(R);
  return 0;
}

Write down the output of the program.

struct three_d{int x,y,z;};

void movein(three_d &t,int step=1) 
{ 
  t.x+=step; t.y-=step; t.z+=step;
} 
void moveout(three_d &t,int step=2) 
{ 
  t.x-=step; t.y+=step; t.z-=step;
} 

int main()
{
  three_d t1={10,20,5},t2={30,10,40};
  movein(t1);
  moveout(t2,5);
  cout<<t1.x<<","<<t1.y<<","<<t1.z<<endl;
  cout<<t2.x<<","<<t2.y<<","<<t2.z<<endl;  
  movein(t2,10);
  cout<<t2.x<<","<<t2.y<<","<<t2.z<<endl;  
  return 0;
}

Find and write the output of the following C++ program code:
Note: Assume all required header files are already being included in the program.

struct Score { 
  int Year;float Topper; 
}; 
void change(Score *s,int x=10)
{
  s->Topper=(s->Topper+15)-x;
  s->Year++;
}	 
int main() 
{ 
  Score Arr[]={{2006,100},{2007,85}};
  Score *point=Arr;
  change(point,40);
  cout<<Arr[0].Year<<'#'<<Arr[0].Topper<<endl;
  change(++point);
  cout<<Year<<'#'<<Topper<<endl;
  return 0; 
}