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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. struct Foo {
  5.   Foo() { cout << "default\n"; }
  6.   Foo(const long long) { cout << "implicit\n"; }
  7. };
  8.  
  9. struct Bar {
  10.   Bar(const short param) : param(param) {}
  11.   operator long long() const { return static_cast<long long>(param); }
  12.   const short param;
  13. };
  14.  
  15. int main() {
  16.   Foo foo = Bar(13);
  17. }
Compilation error #stdin compilation error #stdout 0s 4348KB
comments (?)
stdin 
Standard input is empty
compilation info 
prog.cpp: In function ‘int main()’:
prog.cpp:16:13: error: conversion from ‘Bar’ to non-scalar type ‘Foo’ requested
   Foo foo = Bar(13);
             ^~~~~~~
stdout 
Standard output is empty
https://ideone.com/MUQQfR
language:
C++14 (gcc 8.3)
created:
6 years ago
visibility:
public

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