what is rand()? pls explain me.

Question

#include<iostream>
#include<cstdlib>
using namespace std;
int main() {
cout<<rand();
}
how can be it's output 41? please explain it.

Answer 1

Random Numbers

Being able to generate random numbers is helpful in a number of situations, including when creating games, statistical modeling programs, and similar end products.

In the C++ standard library, you can access a pseudo random number generator function that's called rand(). When used, we are required to include the header <cstdlib>.

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For real random number you can use it, because you use a seed

The srand() Function

The srand() function is used to generate truly random numbers.
This function allows to specify a seed value as its parameter, which is used for the rand() function's algorithm.