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# Random Number Generator

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## Random Number Generator

(OP)
I need some code help writing a random number generator. I
have never tried one before.

Using turbo C++
Thanks

### RE: Random Number Generator

Do you want to write your own code or use the function random(int num) that comes with borland C++?
random(num) returns a random number between 0 and (num - 1).
randomize() initializes the random number generator with a random value. ;)

### RE: Random Number Generator

(OP)
zBuilder,
I want to use the random(int num) function, but I am not familiar with how to use it. I kinda know what it does, and I know that I have to use stdlib.h, but I don't really know how to declare it.

CR

### RE: Random Number Generator

You don't have to declare the random(int num) function, it is already declared in stdlib.h
Below is some code to help you pick your lotto #'s
(Note: it's not bullet proof because it doesn't check to see if the same # is picked twice, but it is simple and should give you the right idea about using the random function.)

#include <stdio.h>
#include <stdlib.h>

void main()
{
int x, YourNumber;

randomize(); //initialize the random # generator
printf ("Your 649 numbers are:\n\n");
for ( x = 1; x < 7; x++) // count out 6 random #'s
{
YourNumber = random(48) + 1; //Get a # between 1 & 49
printf( "%d: %d\n", x, YourNumber );
}
}

### RE: Random Number Generator

I am only a student, but the program that I am working on now uses rand(). It is a program to help elementary students with their math. For difficulty level 1 it generates two numbers 0-9 to add, subtract, etc... For level 2, it generates two numbers 0-99. Here is the if statement that I am using to do this. rand()will generate
random numbers from 0-32000. I hope that this helps!!

if (difficulty == 1)
{
x = rand()%10;
y = rand()%10;
}
else
{
x = rand()%100;
y = rand()%100;
}

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