使用C++将参数传递给另一个函数

#include <iostream>

// 值传递
void valuePass(int num) {
    num += 10;
    std::cout << "Value inside valuePass function: " << num << std::endl;
}

// 引用传递
void referencePass(int& num) {
    num += 10;
    std::cout << "Value inside referencePass function: " << num << std::endl;
}

// 指针传递
void pointerPass(int* num) {
    (*num) += 10;
    std::cout << "Value inside pointerPass function: " << *num << std::endl;
}

int main() {
    int num = 5;

    valuePass(num);
    std::cout << "Value after valuePass function: " << num << std::endl;

    referencePass(num);
    std::cout << "Value after referencePass function: " << num << std::endl;

    pointerPass(&num);
    std::cout << "Value after pointerPass function: " << num << std::endl;

    return 0;
}

Value inside valuePass function: 15
Value after valuePass function: 5
Value inside referencePass function: 15
Value after referencePass function: 15
Value inside pointerPass function: 25
Value after pointerPass function: 25