rand
Generate random number
Description
Rand function returns a pseudorandom number. The algorithm used in rand function uses a seed to generate the series, which should be initialized to some distinctive value using srand.Generate Random Number
#include <cstdlib> #include <ctime> #include <iostream> using namespace std; int main() { srand((unsigned)time(0)); int random_integer; for(int index=0; index<20; index++){ random_integer = (rand()%10)+1; cout << random_integer << endl; } }
Output: This example of program will output 20 random numbers from 1 to 10.
Return Values
The rand function returns a pseudo-random integral number between 0 andRAND_MAX
(where RAND_MAX
is a constant defined in <cstdlib>
).
There is no error return.Last Modified: 3 Mar 12 @ 17:33 Page Rendered: 2022-03-14 17:46:29