如何通过引用或指针传递的指针正确释放main中的内存？

#include <iostream>

void processMemory(int*& ptr) {
    // 对内存进行操作，这里仅作示例
    std::cout << "Processing memory at address: " << ptr << std::endl;
    
    // 释放内存
    delete ptr;
    ptr = nullptr;
}

int main() {
    int* ptr = new int(10); // 动态分配内存并赋值
    std::cout << "Memory address in main: " << ptr << std::endl;
    
    processMemory(ptr); // 通过引用传递指针
    
    std::cout << "Memory address in main after release: " << ptr << std::endl;
    
    return 0;
}