Unable to add arbitrary addresses as exported functions about lief HOT 3 CLOSED

//clang++ binary.cpp -o binary

#include <stdio.h>
#include <cstdlib>

void tempfunction(int choice)
{
	if(choice == 0)
	{
		printf("inside temp_function\n");
	}
	else
	{
		printf("random number is not 0\n");
	}

	return;
}

void zzzz(int choice2)
{
	if(choice2 == 0)
	{
		printf("inside temp_function2\n");
	}
	else
	{
		printf("random number is not 0\n");
	}

	return;
}

int main(int argc, char *argv[])
{
	printf("inside main\n");

	tempfunction(rand());

	zzzz(rand());

	return 0;
}

app.add_exported_function(address,"_fake")