init comm

main.c

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+#include <stdio.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <math.h>
+//#include <iostream.h>
+//#include <random>
+
+//
+//int main(int argc, char **argv)
+//{
+//	printf("hello world\n");
+//	return 0;
+//}
+
+//1. Viz priklad 1 z predchoziho tutorialu. 
+//   Potomci budou koncit s nahodnym cislem status exit( ?? );
+//   Rodic bude sledovat navratovy kod. 
+//   Potomci budou nahodile havarovat, napr. spatny pointer, deleni 0...
+//   Rodic tyto havarie pozna. */
+
+int main(void){	
+
+pid_t pids[10];
+int i, pds;
+int n = 10;
+
+for (i = 0; i < n; ++i) {
+    if ((pids[i] = fork()) < 0) {
+        perror("fork");
+        abort();
+    } else if (pids[i] == 0) {
+        srand(time(NULL) ^ (getpid()<<16));
+        int ex_out = (rand() % 10) + 1;
+		printf("Syn s PID=%d a vratim %d \n", getpid(), ex_out);
+        if ((ex_out == 1) || (ex_out == 5)){
+            printf("Dnes neni dobry den, delime nulou\n");
+            double b = 23/0;
+        } else {
+            printf("Syn s PID=%d a vratim %d \n", getpid(), ex_out);
+            exit(ex_out);
+        }
+        exit(ex_out);
+    } else {
+        printf("Rodic s pid %d \n", getpid());
+
+    }
+}
+    int status;
+    while ((pds = wait(&status)) > 0)
+    {
+        if(WIFEXITED(status) != 0){
+            printf("Synator vratil %d \n", WEXITSTATUS(status));
+        }
+        else {
+            printf("Synator se prepocital (%d) \n", WEXITSTATUS(status));
+        }
+    }
+
+    return 0;
+}
+
+    //int f = fork();
+
+
+
+//  if(f == 0){
+//        int ex_out = rand() % 10 + 1;
+//		printf("Syn s PID=%d a vratim %d \n", getpid(), ex_out);
+//       exit(ex_out);
+//	}
+//	else {
+//		
+//    
+//    return 0;
+//}
+