Random in C++

linkie

Rand always outputs the same numbers though. If you are working on a decent project, you might as well use boost::rand. Googled. The first link on the page should be it.

rand() from cstdlib/stdlib.h only outputs the same numbers if you don't seed it with a different value for each run with srand(). For that matter the pseduo random number generators in boost::random will also produce the same numbers each time if you don't seed them properly too. Don't blame a library just because you don't know how to use it.

You can also

#include

then in a function

int iRandom;
srand(time(0));
iRandom = rand()%7+1;

It will roll a number between 1 and 7.

Quote:

Original post by deathwearer You can also #include then in a function int iRandom; srand(time(0)); iRandom = rand()%7+1; It will roll a number between 1 and 7.

Yup!, but I'll add that you only need to seed the random numbers once (srand only at startup)