#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <assert.h>

#define declare_array(name, start, size) \
    int name[size]; \
    for (int i = 0; i < size; i++) { \
        name[i] = start + i; \
    }

// variables declared in a macro exist outside the
// macro. This means they can conflict with same
// named variables
#define print_array(name) { \
    int array_size = sizeof(name) / sizeof(name[0]); \
    for (int i = 0; i < array_size; i++) { \
        printf("* %d\n", name[i]); \
    } \
}

int main(int argc, char* argv[]) {
    declare_array(numbers, 3, 10);
    declare_array(larger_numbers, 6, 15);
    
    print_array(larger_numbers);
    
    // this works with blocks
    if (numbers[0] < 5) {
        print_array(numbers);
    } else {
        printf("Larger than 5\n");
    }

    // this does not work without blocks on if
    if (numbers[0] < 5)
        print_array(numbers);
    else
        printf("Larger than 5\n");
    return EXIT_SUCCESS;
}
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