online compiler and debugger for c/c++

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template <typename T, T... chars> struct c_str { constexpr c_str() noexcept {} }; template <char... chars> constexpr const c_str<char, chars...> operator "" _cs() noexcept { return c_str<char, chars...>(); } template <char... chars> constexpr double operator "" _dbl() noexcept { return 0.0; } int main() { using d_t = decltype("2.7"_dbl); using s_t = decltype("abc"_cs); return 0; }

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