Question

How to copy byte array to unsigned long in C++

Answer 1

#include <iostream>
#include <cstring>

int main()
{
    const char barray[] = {1, 2}; // 0010 0000 0001 = 513

    unsigned long ulnum = 0;

    std::memcpy(&ulnum, barray, sizeof(barray));

    std::cout << ulnum << std::endl;
}


 
/*
run:

513

*/

 

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