Need Help looping

[skittlesaddictx50v]

How would I condense this into loops so I don't have to repeat all this code? And no I don't want to call a function. Just loop :) Thanks. I am just not sure how to without having the same result. I have been trying for hours.

//earlier in code user chooses a number 1-8 and thats where the number starts and adds or subtracts 0.5 depending on the below randomizer


	srand(time(0)); //randomize either a zero or a one
        r = rand() % 2;


if (r == 0) // if a zero add 0.5, if a one, subtract 0.5 and repeat 12 times
{
	selection = selection + 0.5;
	cout << selection << endl;
}
else
{
	selection = selection - 0.5; 
	cout << selection << endl;
}

  r = rand() % 2;
if (r == 0)
{
	selection = selection + 0.5;
	cout << selection << endl;
}
else
{
	selection = selection - 0.5; 
	cout << selection << endl;
}

  r = rand() % 2;
if (r == 0)
{
	selection = selection + 0.5;
	cout << selection << endl;
}
else
{
	selection = selection - 0.5; 
	cout << selection << endl;
}

  r = rand() % 2;
if (r == 0)
{
	selection = selection + 0.5;
	cout << selection << endl;
}
else
{
	selection = selection - 0.5; 
	cout << selection << endl;
}

  r = rand() % 2;
if (r == 0)
{
	selection = selection + 0.5;
	cout << selection << endl;
}
else
{
	selection = selection - 0.5; 
	cout << selection << endl;
}

  r = rand() % 2;
if (r == 0)
{
	selection = selection + 0.5;
	cout << selection << endl;
}
else
{
	selection = selection - 0.5; 
	cout << selection << endl;
}

  r = rand() % 2;
if (r == 0)
{
	selection = selection + 0.5;
	cout << selection << endl;
}
else
{
	selection = selection - 0.5; 
	cout << selection << endl;
}

  r = rand() % 2;
if (r == 0)
{
	selection = selection + 0.5;
	cout << selection << endl;
}
else
{
	selection = selection - 0.5; 
	cout << selection << endl;
}

  r = rand() % 2;
if (r == 0)
{
	selection = selection + 0.5;
	cout << selection << endl;
}
else
{
	selection = selection - 0.5; 
	cout << selection << endl;
}

  r = rand() % 2;
if (r == 0)
{
	selection = selection + 0.5;
	cout << selection << endl;
}
else
{
	selection = selection - 0.5; 
	cout << selection << endl;
}

  r = rand() % 2;
if (r == 0)
{
	selection = selection + 0.5;
	cout << selection << endl;
}
else
{
	selection = selection - 0.5; 
	cout << selection << endl;
}

  r = rand() % 2;

if (r == 0)
{
	selection = selection + 0.5;
	cout << selection + where_drop << endl;
}
else
{
	selection = selection - 0.5; 
	cout << selection + where_drop << endl;
}

 // below is the results. if you end at zero after 12 randoms, then you get 100 bucks and so on

if (where_drop = 0){
	user_winnings = 100;
}
if (where_drop = 1){
	user_winnings = 500;
}
if (where_drop = 2){
	user_winnings = 1000;
}
if (where_drop = 3){
	user_winnings = 0;
}
if (where_drop = 4){
	user_winnings = 10000;
}
if (where_drop = 5){
	user_winnings = 0;
}
if (where_drop = 6){
	user_winnings = 1000;
}
if (where_drop = 7){
	user_winnings = 500;
}
if (where_drop = 8){
	user_winnings = 100;
}

	cout<<"You've won $" << user_winnings << "!" << endl;

[soranz]

Loops are all about generalizing a pattern.
Look at what each if/else is doing. Each of them is doing: r = rand() % 2; and then checking results. You also know that you want these checked 12 times. Since the loop is limited by a counting value this sounds like a good candidate for a 'for' loop.

Just based on that you could have this:

srand(time(0));  //seed the random number
for(int i=1; i<=12; i++) //12 iterations starting from 1
{
  r = rand() % 2;
  if (r == 0)
  {
	selection = selection + 0.5;
	cout << selection << endl;
  } 
  else
  {
	selection = selection - 0.5; 
 	cout << selection << endl;
  }
}

As it turns out the top loop can be simplified even more by adjusting the output from the random number to fit ur needs:

srand(time(0));  //seed the random number
//r = rand() % 2;  //randomize either a zero or a one //uneeded

for(int i=0; i<12; i++) //12 iterations starting from 0
{
    selection += (rand() % 2) - 0.5;
    cout << selection << endl;
}

Is there a pattern in lines 154 to 180 ?

[doug4]

for (int i = 0; i < 12; i++)
{
   int r = rand() % 2;
   if (r == 0)
   {
	selection = selection + 0.5;
	cout << selection << endl;
   } 
   else
   {
	selection = selection - 0.5; 
	cout << selection << endl;
   }
}

By the way, your if statements at the end won't do what you expect them to. Each clause is actually an assigment statement (=) rather than an "is equal" statement (==). Each assignement that is not 0 will evaluate to true, so userWinnings will be set to 500, 1000, 0, 10000, 0, 1000, 500 and 100 each time through.

[skittlesaddictx50v]

thanks a ton for the help

[skittlesaddictx50v]

actually how would I set the parameters so that "selection" couldn't go below zero or higher than 10?

[Aramil of Elixia]

ifs and else ifs

[skittlesaddictx50v]

inside here? or outside of it

 if (randomizer == 0)
  {
    selection = selection + 0.5;
    cout << selection << endl;
  } 
  else
  {
    selection = selection - 0.5; 
     cout << selection << endl;
  }

[soranz]

Is this the 'selection' from the user ? or the adjusted selection from the +- 0.5 loop ? What do you want to happen if it does hit 10 or 0? Stop? Only count in the opposite direction ?

[skittlesaddictx50v]

if the adjusted selection ever hits 0 or 10 it goes back to 0.5 or 9.5 respectively so it never goes under/over. just keep the adjusted selections always in between 0-10

[soranz]

srand(time(0));  //seed the random number
//r = rand() % 2;  //randomize either a zero or a one //uneeded

for(int i=0; i<12; i++) //12 iterations starting from 0
{
    selection += (rand() % 2) - 0.5;
    if(selection >= 10)
         selection -= 0.5;
    if(selection <= 0)
         selection += 0.5;
        
    cout << selection << endl;
}

[skittlesaddictx50v]

i did the above but it didn't work for me. it just got messed up from the original I posted above.