C++将字符数组转换为十六进制字符串

#include <iostream>
#include <sstream>
#include <iomanip>

std::string arrayToHex(const char* array, int size) {
    std::stringstream ss;
    ss << std::hex << std::setfill('0');
    
    for (int i = 0; i < size; ++i) {
        ss << std::setw(2) << static_cast<int>(array[i]);
    }
    
    return ss.str();
}

int main() {
    char array[] = "Hello, World!";
    int size = sizeof(array) - 1; // Exclude null terminator
    
    std::string hexString = arrayToHex(array, size);
    std::cout << hexString << std::endl;
    
    return 0;
}