C++ 常用操作

使用signal机制，来捕获CTRL + C, 以使while(1)类的循环正常终止，正常情况下使用ctrl + c杀死程序，并不会调用析构函数，对有些库和框架可能会出问题

 #include <csignal>
 #include <iostream>

 static bool running = true;

 static void sigint_handler(int signum) {
     running = false;
 }

 int main() {
     signal(SIGINT, sigint_handler);

     while (running) {
         // your program logic here
     }

     std::cout << "Program ended normally." << std::endl;
     return 0;
 }

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