How do you randmomize strings?

[Wintermini]

Basically, I'm doing a MULTIPLE CHOICE quiz with the following questions, and so far i have this down:

Turing:

var question : array 0 .. 8 of string         question (0) := "Approximately how big is a serving?"         question (1) := "What is the recommended serving of Milk and Milk Alternatives for a 15-year-old girl?"         question (2) := "Eating too much contribute to _____?"         question (3) := "What is the type of food you shouldn't be eating too much of?"                question (4) := "Aside from healthy eating, what else should you do to balance your healthy lifestyle?"                question (5) := "Which food products belong in the Grain Products?"         question (6) := "Which food products belong in the Meat and Meat Alternatives?"          question (7) := "Which food products belong in the Fruits and Vegetables?"

[deltamanx]

You could take the long round about way of doing it and do this:

code:

var something : int something := randint (0, 7) if something = 0 then put question (0) elsif something = 1 then put question (1) elsif ~~~ ~~~ ~~~ elsif something = 7 then put question (7) end if

But I don't think you want to do that.

[Ktomislav]

You mean how to make you program asks you a random question?
If so then use what deltamanx said or simplified:

code:

var temp, num_of_q: int temp := randint (0, num_of_q-1); put question (temp)

num_of_q is number of questions you have got so far. So for now num_of_q is 8.
The reason -1 is there is because you started your question array from 0.
Hope this helps.

[Insectoid]

The problem with that is that you can have questions repeat. Better to have a 'shuffle' function. There are different ways to do this, the easiest being an array of strings, then select 2 random elements and swap them. Do this X amount of times (I dunno exactly how big X should be, probably array size * another variable. It's hard to judge the point where it can be called 'shuffled').

Shuffling is actually remarkably similar to sorting.

[Ktomislav]

If want to make sure your questions don't repeat use array which contains indexes of asked questions.
And ofcourse a counter to know how many questions your program has asked so far.

Lets say asked: array of int and num_asked: int.
So for instance if your program asks question number five num_asked := num_asked + 1;
and asked (num_asked) := 5;