如何将3 ints连接到unsigned long long？ [英] How to concatinate 3 ints into unsigned long long?

问题描述

说，我们得到 int A 333 ; int B 4444 和 int C 5454 我们要将它们连接成一个 unsigned long long 000333 004444 005454 00 格式如0/1 int sign，int）。如何在C ++中做这样的格式化，有没有任何C ++ 11工具可以简化过程？

Say, we get int A 333; int B 4444 and int C 5454 we want to concatenate them into one unsigned long long 000333 004444 005454 00 (with format like 0/1 int sign, int). How to do such formating in C++, and are there any C++11 tools that can simplify process?

推荐答案

是什么意思？

unsigned int A = 333;
unsigned int B = 4444;
unsigned int C = 5454;

unsigned long long r = A*100000000000000ULL + B*100000000ULL + C*100ULL;

证明其工作原理： http://ideone.com/XWFdU

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