i've worked for days on this and i can't get it to work

**stijn** · 01-04-2002

all right, this is an exercise i was given at school:
you have to write a dos program in c++ where you ask the user how many times 1 dice should be thrown.
the throwing should be done in a function, no problems so far, here's my code all variables are declared properly, so is the function prototype and the headerfiles are ok:

cout<<"how many times?"<<endl;
cin>>times;
for (int i=0; i<=times; i++)
{result=throwdice();
cout<<result
}

int throwdice()
{
int result;
randomize();
result=random(6)+1;
return result;
}

you have to calculate the percentage of 1, 2, 3, 4... thrown but that's not the problem.
the function works but if, for example i let the program throw the dice 3 times i always get the same result; the output of the function is three times the same, it seems that the program refuses to choose the numbers randomly three times, only the first time.
i hope some of you understand my explanation of the problem and would somebody please help me with this?
thanks

stijn

**Fordy** · 01-04-2002

You might try calling srand(). It's supposed to work over more compilers than randomise and only needs calling once.

This is nicely explained in our FAQs, so you would do well to have a look. FAQs

This should be more what you are looking for;

Code:

#include <iostream>
using namespace std;
#include <cstdlib>
#include <ctime>


int throwdice(void);

int main(int argc, char *argv[])
{
int times;
srand(time(NULL));
cout<<"how many times?" <<endl;
cin>>times; 
for (int i=0; i<times; i++)
{
int result=throwdice();
cout << "Dice roll " << i+1 << " = " << result << endl;
} 
 return 0;
 }



int throwdice(void)
{ 
int result; 

result=(rand()%6)+1;
return result; 
}

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i've worked for days on this and i can't get it to work