//en.cppreference.com/w/c/types/size_t.html
#include <stdio.h>
#include <stddef.h>
#include <stdint.h>
int main(void)
{
const size_t N = 100;
int numbers[N];
for (size_t ndx = 0; ndx < N; ++ndx)
numbers[ndx] = ndx;
printf("SIZE_MAX = %zu\n", SIZE_MAX);
size_t size = sizeof numbers;
printf("size = %zu\n", size);
}