How can I generate a random number between 0 and 4 in c++?

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How to generate a random number from within a range - C

I want to generate a random number between 0 and 4 inclusively. How can I do this in c++?

What have you tried? Googling "generate random number C++" should get you started. — Blender, Oct 04 '12 at 19:22
This isn't a duplicate of that question about C because this question is about C++. In the current version of C++ the correct answer will obviously not involve `rand()`. — bames53, Oct 04 '12 at 21:18

score 6 · Answer 1 · answered Oct 04 '12 at 19:23

6

You could call std::rand(), usning the modulo operator to limit the range to the desired one.

std::rand()%5

You can also have a look at the new C++11 random number generation utilities

answered Oct 04 '12 at 19:23

juanchopanza

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Oh I figured I'd at least have to include another library – John Oct 04 '12 at 19:24

score 3 · Answer 2 · answered Oct 04 '12 at 19:37

Just for completeness I show you a C++11 solution using the new random facility:

#include <random>
#include <ctime> 

int main() {
    std::minstd_rand generator(std::time(0)); 
    std::uniform_int_distribution<> dist(0, 4);
    int nextRandomInt = dist(generator);
    return 0;
}

How can I generate a random number between 0 and 4 in c++?

2 Answers2