看看下面的实例：
实例
#include<iostream>#include<csignal>#include<unistd.h>usingnamespacestd; voidsignalHandler(intsignum){ cout << "Interrupt signal (" << signum << ") received.\n"; // 清理并关闭 // 终止程序 exit(signum); }intmain(){ // 注册信号 SIGINT 和信号处理程序 signal(SIGINT, signalHandler); while(1){ cout << "Going to sleep...." << endl; sleep(1); } return0;}
当上面的代码被编译和执行时，它会产生下列结果：
Going to sleep....
Going to sleep....
Going to sleep....
现在，按 Ctrl+C 来中断程序，您会看到程序捕获信号，程序打印如下内容并退出：
Going to sleep....
Going to sleep....
Going to sleep....
Interrupt signal (2) received.
