c++ - Cin 并指向所选函数

Question

我不明白如何做到这一点，所以当我在 testSelection 中输入我的选择以使其指向功能测试时。我该怎么做呢？不应该直接去那里吗？

 #include <iostream>
 using namespace std;

 int test (int testSelection);

 int main()
 {
int testSelection;

cout << "Welcome to the pizza place!" << endl;
cout << "Choose 1 for pizza or 2 for drinks: ";

cin >> testSelection;


return 0;

}

int test (int testSelection)
{
if (testSelection== 1)
{
    cout << "select your Pizza" << endl;

}
if (testSelection== 2)
{
    cout << "Please select your drink" << endl;

}
else
    cout << "test";

 return 0;
 }

Answer 1

你需要调用函数...

cin >> testSelection;test(testSelection);

基本上，您已经编写了一个函数定义 int test(int testSelection) {...code...} 但是，它只是休眠代码，直到您通过调用它来调用它。