trigraph in C++
``` #include<iostream> int main(){ int x=0; //What is wrong here??/ x=1; std::cout<<x; // 1 after c++17, but 0 before. } ```
``` #include<iostream> int main(){ int x=0; //What is wrong here??/ x=1; std::cout<<x; // 1 after c++17, but 0 before. } ```