Random Number generator ?

[Sanilk21]

i want to write a random number generator that generates a number between 1 to 100. i have tried random() function but it prints out the same number every time. HELP pls ...

[TwilightSpectre]

There are two ways of doing this. The easy C-style way is to use the rand() function - for that you will need to seed the random number generator as well:

#include <stdio.h>
#include <stdlib.h>
#include <time.h>

int main() {
    srand(time(0)); // seed the random number generator
    printf("%d\n", rand() % 100 + 1); // print a number between 1 and 100
    return EXIT_SUCCESS;
}

Alternately, you could do the C++ style way for 'more random' numbers, using the various objects in the <random> header:

#include <iostream>
#include <random>
#include <ctime>

int main() {
    std::mt19937 gen (std::time(nullptr)); // a random number generator
    std::uniform_int_distribution<int> dist (1, 100); // the distribution

    std::cout << dist(gen) << std::endl;
    return 0;
}

Also, note that random() is a Borland extension, not a standard C or C++ function.