C++ Quiz

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Question #131 Difficulty:

According to the C++11 standard, what is the output of this program?

#include <iostream>
using namespace std;

class C {
  explicit C(int) {
    std::cout << "i";
  C(double) {
    std::cout << "d";

int main() {
  C c1(7);
  C c2 = 7;


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