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

int main(){
	int i;
	int pid[3];
	int signals[3];
	int signal,process_id;
	FILE* PIDs_file;
	signals[0]=10;//Wstrzymanie SIGUSR1
	signals[1]=12;//Wznowienie SIGUSR2
	signals[2]=2;//Koniec dzialania SIGINT

	for(;;){
		printf("Wybierz signal : \n");
		printf("1. Wstrzymaj prace procesu\n");
		printf("2. Wznow prace procesu\n");
		printf("3. Zakoncz prace procesow\n");
		printf("4. Wyjdz z programu\n");
		scanf("%d",&signal);
		getchar();//usuniecie entera

		if(signal == 4)return 0;

		printf("Wybierz proces: \n");
		printf("1.Proces P1\n");
		printf("2.Proces P2\n");
		printf("3.Proces P3\n");
		scanf("%d",&process_id);
		getchar();//usuniecie entera

		if(PIDs_file = fopen("PID_info.txt","r")){
		for(i=0;i<=2;i++) fscanf(PIDs_file,"%d",&pid[i]);
		fclose(PIDs_file);
		}else printf("Nie znaleziono pliku pids.txt");

		kill(pid[process_id-1], signals[signal-1]);
	}
}