View topic - Need to randomize some things in c#. - Windows, Apple, Application, Abandonware and Game Beta Downloads/Repository

ka-la

Hey betaarchive,

Well im doing something for school, some programming in C#, geography exactly. So I basiacally making an application that would test if you know the countries of World, which seemed not so hard in my head.

So now I started and lets say I have lots of images with these countries I want, Africa for example, lets say I have one map in the window form and lots of countries in other images which are painted lets say red, and are placed exactly how they should show up. I make all these visible=false and they are all hidden. Now how could I go if I would want to do something like this: press Start - Random red country appears on scree, later on it validets if written name in textbox matches the one that should be and show if its either correct or incorrect, and if correct button next would randomize another random country... and so on.

If anyone has any ideas how should I go about this, I would be really really thankful. This thingy must be ready for next tuesday.

So, anyone?

ViennaXP

Hi,
currently I'm only Console but...
Make a random Number between 1 and 20 (when you have around 20 countries). Don't know the Command now. Then do a If or Switch, which check the Number. For every Number you can let appear something or else (I would use switch). To prevent the pogramm to use one number more times, write the Number in a session (or local) variable ,which is checked BEFORE If or Switch.
Use an Array for local Varible

Homaaa

You can use a Dictionary<string,[...]> for this kind of stuff. Just pull out a random entry,store it in a local variable in the button_Click event handler, check whether the currently displayed image == entry.Value and entered text == entry.Key. Also displaying all images and hiding them from the very beginning is not very elegant, rather put them on the UI on a more dynamic way (when correct solution is give, pictureBox1.Image = ...)

EDIT: To get a random number between 0 and the dictionary's length, do "Random r = new Random(); int num = r.Next(countryDictionary.Count);"

Jecag

Just making an assumption here but (C++ guy here, not a C#, sorry)

Code:

#include <ctime.h>

int main(int argc, char *argv[])
{
const int Elements = 5;
char *countries[Elements] = (char *);

/* or add your own form of loading the data into memory asides from hard coding it in, whatever */
countries[0] = "United States of America";
countries[1] = "Great Britian";
countries[2] = "Brazil";
countries[3] = "Canada";
countries[4] = "Jamacia";

srand((unsigned)time(0)); /* generate pseudo random numbers according to the current system time */

int x = 0;
while (x == 0)
{
printf("%s", countries[(rand()%Elements)+1]); /* select random country over and over again, modify for your own use, etc. this is just an example */
}
return 0;
}

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Need to randomize some things in c#.

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