#include <iostream>
using namespace std;int main()
{uint32_t a = 10;uint32_t b = 600;//先将uint32_t的a转为uint64_t，此时a前面32位都是0，然后左移32位，此时右32位为0，最后加上uint32_t类型的b，填充右32位的0uint64_t val = (((uint64_t)a) << 32) + b;cout << a << " " << b << endl;cout << val << endl;{//先将uint64_t的值右移32位并转为int类型，就能获取之前uint32_t类型的a值int a1 = (int)(val >> 32);//uint32_t的b值可以直接将uint64_t的值强转为int(uint32_t)即可，就可以获取原值int a2 = (uint32_t)val;cout << a1 << " " << a2 << endl;}return 0;
}
/*
输出结果:
10 600
42949673560
10 600
*/