some random code

main.cc

// MACROS AND TYPEDEFS
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <stdbool.h>

typedef unsigned int uint;
#define UNUSED(x) ((void)(x))

bool is_prime(uint n)
{
    if (n < 2)
        return 0;
    if (n < 4)
        return 1;
    if (n % 2 == 0 || n % 3 == 0)
        return 0;
    for (uint i = 5; i * i <= n; i = i + 6)
        if (n % i == 0 || n % (i + 2) == 0)
            return 0;
 
    return 1;
}
 

void do_the_thing(uint y) {
	const int size = 20;
	uint* list = (uint *)malloc(sizeof(uint) * size);
	assert(list); // assert if not null
	srand(time(NULL));
	for (int i = 0; i < size; ++i) 
		list[i] = rand() % (y + 100) + 3;	

	puts("[");
	for (int i = 0; i < size; ++i) {
		uint s = list[i];
		printf("%u ", s);
		if (is_prime(s)) printf("prime, ");
		if (s % 2 == 0) puts("even");
		else puts("odd");
	}
	puts("]");
	free(list);
}


int main(void) {
	do_the_thing(10);	
}