cpp rand

The "rand" function in C++ is used to generate a pseudo-random number. It is part of the C standard library and can be used to generate random numbers within a given range. Here are the steps to use the "rand" function in C++:

1. Include the header file at the beginning of your program to use the "rand" function.
2. Call the "srand" function to seed the random number generator. This step is optional, but it's recommended to ensure different random sequences each time the program runs.
3. Use the "rand" function to generate a random number. This function returns a pseudo-random integer between 0 and RAND_MAX.
4. If you want a random number within a specific range, use the modulo operator (%) to limit the range of the random numbers.

Here's an example of using the "rand" function to generate a random number between 1 and 100:

#include <iostream>
#include <cstdlib>

int main() {
    // Seed the random number generator
    srand(time(0));

    // Generate a random number between 1 and 100
    int randomNumber = 1 + (rand() % 100);

    // Output the random number
    std::cout << "Random number: " << randomNumber << std::endl;

    return 0;
}