std::popcount metodu - Bitleri Sayar

Giriş

Sadece unsigned types ile çalışır. Açıklaması şöyle

When applying bitwise operations, such as counting the number of set bits (popcount), on signed integers, there can be unexpected behavior due to the sign bit. Specifically, the sign bit can propagate during operations, potentially leading to incorrect results or undefined behavior. 

sigaction metodu

Örnek

Şöyle yaparız.

#include <signal.h>
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>

void my_handler(int s){
           printf("Caught signal %d\n",s);
           exit(1); 

}

int main(int argc,char** argv)
{

   struct sigaction sigIntHandler;

   sigIntHandler.sa_handler = my_handler;
   sigemptyset(&sigIntHandler.sa_mask);
   sigIntHandler.sa_flags = 0;

   sigaction(SIGINT, &sigIntHandler, NULL);

   pause();

   return 0;    
}