#include <stdarg.h>
#include <stdio.h>

#define program(arguments) void main(void) {arguments;}
#define calculate(...) (calculate__(sizeof((int[]){__VA_ARGS__})/sizeof(int), __VA_ARGS__))

int calculate__(int number, ...) {
    int sum = 0;
    va_list arguments;
    va_start(arguments, number);

    for(int i = 0; i < number; i++) {
        sum += va_arg(arguments, int);
    }

    va_end(arguments);
    return printf("%d", sum);
}

#define __calculate calculate__
#define _calculate calculate__

typedef int * pointer_int;
typedef void * pointer_void;
typedef char * pointer_char;

program (
    pointer_int i = 0;
    printf("%d", i, "%d", calculate(1 * 2 - 3 + 4 / 5))
)