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

#define MAGIC 0xAEAEAEAE

typedef int (*adder)(int);

int adderGeneric(int x)
{
	int data = MAGIC;
	return data + x;
}

void endOfAdderGeneric() {}

adder createAdder(int data)
{
	char *start = (char *)adderGeneric;
	char *end = (char *)endOfAdderGeneric;

	char *result = (char *)malloc(end - start);
	memcpy(result, start, end - start);
	
	char *p;
	for (p = result; ; ++p) {
		int *q = (int *)p;
		if (*q == MAGIC) {
			*q = data;
			break;
		}
	}

	return (adder)result;
}

void deleteAdder(adder a)
{
	char *m = (char *)a;
	free(m);
}

int main()
{
	adder add3 = createAdder(3);
	adder add5 = createAdder(5);
	printf("%d %d\n", add3(10), add5(10));
	deleteAdder(add3);
	deleteAdder(add5);
	return 0;
}