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I have been trying to generate a random number from 0 to 29. I've tried different methods from different sources to no avail.

cpplearner
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Taran Roberts
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    https://www.google.com/search?q=c%2B%2B+generate+random+number – SLaks Mar 28 '19 at 15:08
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    What have you tried? What happened? – SLaks Mar 28 '19 at 15:08
  • Taran, step one in figuring out coding questions is to do a google. I did a google of "c++ generate random number" and caught a bunch of good answers. This would have been MUCH faster than leaving questions here, especially as you're going to get a lot of people pointing you to the existing answers. – Joseph Larson Mar 28 '19 at 15:26

1 Answers1

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To generate random numbers in c++ you will neeed to include the <stdlib.h> library.

#include <stdlib.h>

Start by intialising a seed. In this example we will use the system time (<time.h> library) as a way to get a random seed initializer:

srand (time(NULL));

Now we create an integer variable: 

int rNumber;

Finally we store the random generated number in the rNumber variable: 

rNumber = rand() % 10 + 1;

Note that % 10 + 1 means that the generated random number will be between 1 and 10.

For more in formation on random number generation and a more in depth example refer to: http://www.cplusplus.com/reference/cstdlib/rand/

bruno echagüe
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    Please don't recommend C solutions for C++ questions especially if there are better C++ answers. – Quimby Mar 28 '19 at 15:30