#include <cstddef>
#include <iostream>

// In C we need a length in bytes to check for equality
void compareObject(void *a, void *b, size_t len) {
  if (a == b)
    std::cout << "Same address" << std::endl;

  // Being explicit about pointer type allows pointer arithmetic
  unsigned char *i1 = (unsigned char *)a;
  unsigned char *i2 = (unsigned char *)b;

  for (size_t i = 0; i < len; i++) {
    if (i1[i] != i2[i]) {
      std::cout << "Different value" << std::endl;
      return;
    }
  }

  std::cout << "Same value" << std::endl;
}

template <typename T> void cmp(T &a, T &b) {
  if (&a == &b)
    std::cout << "Same object" << std::endl;

  if (a == b)
    std::cout << "Same value" << std::endl;
  else
    std::cout << "Different value" << std::endl;
}

int main() {
  int a = 10, b = 10, c = 12;

  std::cout << "Checking template version" << std::endl;

  cmp(a, b);
  cmp(a, c);

  std::cout << "Checking C version" << std::endl;

  compareObject(&a, &b, sizeof(int));
  compareObject(&a, &c, sizeof(int));
}