malloc calculator

malloc_calc.c

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

size_t malloc_calc(size_t size){
	const size_t realloc_size = sizeof(void *) * 2;
	const size_t realloc_add  = sizeof(void *);

	size_t newsize = size / realloc_size;

	if (size % realloc_size)
		newsize++;

	return newsize * realloc_size + realloc_add;

}

int main(){
	//void *p1 = malloc(1);
	//void *p2 = malloc(16);

	printf("%zu\n", sizeof(int));
	printf("%zu\n", sizeof(void *));

	printf("%zu %zu %zu\n", malloc_calc(1), malloc_calc(16), malloc_calc(1) + malloc_calc(16));

	return 0;
}