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adding a bunch of random numbers

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Join Date: Sep 2009

Posts: 6

Reputation: blahbla is an unknown quantity at this point

Solved Threads: 0

blahbla

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Newbie Poster

adding a bunch of random numbers

Sep 17th, 2009

hi i need some help with adding a bunch of random numbers.
i dont understand how to add them all.
heres the code:

 Help with Code Tags 
 C++ Syntax (Toggle Plain Text) 
#include <iostream>
#include <cmath>
using namespace std;
int main ()
{
int i,x;
srand (time (NULL));
for (i=1; i<=10; i++){
x=rand()%10+1;
cout<<x<<endl;
}
system ("pause");
return 0;
}
#include <iostream>
#include <cmath>
using namespace std;
int main ()
{
int i,x;
srand (time (NULL));
for (i=1; i<=10; i++){
x=rand()%10+1;
cout<<x<<endl;
}
system ("pause");
return 0;
}

i wanna know how to add up all 10 random numbers generated from this.
thank you.

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Join Date: Aug 2009

Posts: 73

Reputation: dgr231 is on a distinguished road

Solved Threads: 7

dgr231

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Junior Poster in Training

Re: adding a bunch of random numbers

Sep 17th, 2009

Hi blahbla,

It seems to me that your best bet would be to create a new variable before you start your loop that you use to add all of your random numbers together. I would suggest doing the addition right before the end of your for loop so that every iteration of the loop ends by adding the new random number to the accumulation variable.

See compound operators for the correct usage:
http://www.cplusplus.com/doc/tutorial/operators/

-D

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Join Date: Aug 2005

Posts: 5,273

Reputation: iamthwee is a splendid one to behold

Solved Threads: 378

iamthwee

Offline

Posting Expert

Re: adding a bunch of random numbers

Sep 17th, 2009

set a variable at the beginning then add them all up:

eg.

 Help with Code Tags 
 C++ Syntax (Toggle Plain Text) 
int total = 0;
 
for ( int i = 0; i < 10; i++ )
{
  total = total + i;
}
 
cout << total;
int total = 0;

for ( int i = 0; i < 10; i++ )
{
  total = total + i;
}

cout << total;