Type_Inspection

C++ 實作，很多方程式利用型別檢驗，檢視型別安全。

提供 code 額外進階的寫法如下：

#include <iostream>
bool goOn() {
std:: cout << "Do You wanna go on? (y or n)\n"; // question isuued
char answer = 0;
std::cin >> answer;
switch(answer) {
case 'y':
return true;
case 'n':
return false;
default:
cout << "I guess you are trying to say no.\n";
return false;
}
}
int main() {
goOn();
return 0;
}