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C++ | Templates | Question 10

  • Last Updated : 28 Jun, 2021
Geek Week


#include <iostream>
using namespace std;
template<int n> struct funStruct
    static const int val = 2*funStruct<n-1>::val;
template<> struct funStruct<0>
    static const int val = 1 ;
int main()
    cout << funStruct<10>::val << endl;
    return 0;

(A) Compiler Error
(B) 1024
(C) 2
(D) 1

Answer: (B)

Explanation: This is an example of template metaprogramming. The program mainly calculates 2^10.

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