C++ | Templates | Question 8

Output?

#include <iostream>
using namespace std;

template <int i>
void fun()
{
   i = 20;
   cout << i;
}

int main()
{
   fun<10>();
   return 0;
}

(A) 10
(B) 20
(C) Compiler Error


Answer: (C)

Explanation: Compiler error in line “i = 20;”

Non-type parameters must be const, so they cannot be modified.

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