如何printf uint64

用llu打印 uint64，在64位OS下编译会报如下warning：

uint64_t num=10;
printf("uint64: %llu\n", num);

warning: format '%llu' expects type 'long long int', but argument 4 has type 'uint64_t'

修正如下：

#include
printf("uint64: %" PRIu64 "\n", num);