test-priuptr.cpp

#define __STDC_LIMIT_MACROS
#define __STDC_CONSTANT_MACROS
#define __STDC_FORMAT_MACROS

#include <cinttypes>
#include <cstdint>
#include <cstdio>
#include <cstring>

template<typename T>
bool test(int x, const char *fmt)
{
	char buf_1[20] = {0};
	snprintf(buf_1, sizeof(buf_1), "%d", x);

	const T y = x;
	char buf_2[20] = {0};
	snprintf(buf_2, sizeof(buf_2), fmt, y);

	const bool result = (strcmp(buf_1, buf_2) == 0);
	if (result)
		fprintf(stderr, "Ok (%s)\n", fmt);
	else
		fprintf(stderr, "Error (%s) \"%s\" != \"%s\"\n", fmt, buf_1, buf_2);

	return result;
}

int main(int argc, char* argv[])
{
	// https://en.cppreference.com/w/cpp/types/integer

	test <uintptr_t>      (1, "%" PRIuPTR);
	test <uint_least64_t> (1, "%" PRIuLEAST64);
	test <uint_fast64_t>  (1, "%" PRIuFAST64);
	test <uint64_t>       (1, "%" PRIu64);

	test <intptr_t>       (1, "%" PRIdPTR);
	test <int_least64_t>  (1, "%" PRIdLEAST64);
	test <int_fast64_t>   (1, "%" PRIdFAST64);
	test <int64_t>        (1, "%" PRId64);

	return 0;
}