C++ help.

[Hen Barrison]

BeIng the aspIrIng programmer I am, I was fIddleIng wIth the numbers and operatIons of thIs random number generator I found onlIne. I tInkered wIth It long enough to get the output to be truly random, but Its output Is InfInite. I want It to generate one number at a tIme, or at least somethIng more manageable.

Here's what I've got so far.

Code: Select all

#include <iostream>
#include <ctime>
#include <cstdlib>

using namespace std;

int main()
{
    srand((unsigned)time(0));
    int random_integer;
    int lowest=1, highest=20;
    int range=(highest-lowest)+1;
    for(int index=0; index<20; index--){
        random_integer = lowest+int(range*rand()/(RAND_MAX + 1.0));
        cout << random_integer << endl;

    }
}

P.S,

I really have an absoulty novIce understandIng of what I'm workIng wIth here, so If the answer Is burnIngly obvIous, I apologIze.

D.P.S, also, If It matters, I'm usIng code blocks as my complIer.

[HeroKing]

code blocks, nice choice 8) same one i use. if you're trying just a random number generator, that is way too complicated. i tried it, and all i got was the number 1 in an infinite loop. for a short and simple random number generator, here's what you want



i highly recommend this video tutorial series, since it's the one i follow, and easiest for me to understand. here's a playlist, so you can add it to your account, if you wish to do so.

http://www.youtube.com/playlist?list=PL96ED5F4FC5EA8F7D

[Hen Barrison]

code blocks, nice choice 8) same one i use. if you're trying just a random number generator, that is way too complicated. i tried it, and all i got was the number 1 in an infinite loop. for a short and simple random number generator, here's what you want

[youtube][youtube]

i highly recommend this video tutorial series, since it's the one i follow, and easiest for me to understand. here's a playlist, so you can add it to your account, if you wish to do so.

Thanks, that works perfectly.

[Hen Barrison]

Well, Now that I have that, I want to prInt text, based on what number the generator gives out.

How would I do that?

Here's what I've got now:

Code: Select all

#include <iostream>
#include <ctime>
#include <cstdlib>

using namespace std;

int main()

{

   srand(time(0));

   for(int x = 1; x<2;x++) {
       cout << "This is what you rolled:\n" << endl;
       cout << 1+(rand()%20) << endl;


   }

[Jivix]

Code: Select all

    for(int index=0; index<20; index--)

If you don't even understand why you have an infinite loop here, I don't think you should go on with that. Start learning programmation from the beginning (conditions, loops, ...).

Code: Select all

   for(int x = 1; x<2;x++) {

That loop is as stupid as the previous one. The program will enter only one time in the loop, so it is totally useless. Just remove that line.

[HeroKing]

Well, Now that I have that, I want to prInt text, based on what number the generator gives out.

How would I do that?

Here's what I've got now:

Code: Select all

#include <iostream>
#include <ctime>
#include <cstdlib>

using namespace std;

int main()

{

   srand(time(0));

   for(int x = 1; x<2;x++) {
       cout << "This is what you rolled:\n" << endl;
       cout << 1+(rand()%20) << endl;


   }

for one thing, you seem to be missing another } to end your function. and Jivix is right, since that for loop will only work once. i'll show you a header function i wrote for a simple coin toss program i came up with.

Code: Select all

#include "cointoss_h.h"
#include <ctime>
#include <cstdlib>
#include <iostream>
#include "topmenu.h"

using namespace std;

cointoss_h::cointoss_h()
{
    srand(time(0));
    int result=(rand()%100);
    if(result<50){
        cout << "tails" << endl;
    }else{
        cout << "heads" << endl;
    }
}