C++:如何获取变量的类型并将其用作模板

#include <iostream>
#include <typeinfo>

template <typename T>
void printType(T var) {
    std::cout << "Type: " << typeid(var).name() << std::endl;
}

int main() {
    int num = 10;
    double pi = 3.14;
    std::string name = "John";

    printType(num);   // 输出：Type: i
    printType(pi);    // 输出：Type: d
    printType(name);  // 输出：Type: NSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE

    return 0;
}