Finished first two exercises of worksheet 2

Guião 2/Ex1/main.c

@@ -0,0 +1,10 @@
+#include <stdio.h>
+#include <unistd.h>     /*chamadas ao sistema: defs e decls essenciais*/
+#include <sys/wait.h>   /*chamadas wait*() e macros relacionadas*/
+
+int main(int argc, char const *argv[]) {
+    pid_t pid = getpid();
+    pid_t ppid = getppid();
+    printf("The PID is %d.\nThe PPID is %d.\n",(int)pid,(int)ppid);
+    return 0;
+}

Guião 2/Ex2/main.c

@@ -0,0 +1,21 @@
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+
+int main(int argc, char const *argv[]) {
+    pid_t pid;
+    if((pid = fork()) == 0) {
+        pid_t childPID = getpid();
+        pid_t childPPID = getppid();
+        printf("Child PID = %d\nChild PPID = %d\n", childPID, childPPID);
+    }
+    else {
+        pid_t parentPID = getpid();
+        pid_t parentPPID = getppid();
+        pid_t parentChildPID = pid;
+        printf("Parent PID = %d\nParent PPID = %d\nChild PID from Parent = %d\n\n", parentPID, parentPPID, parentChildPID);
+        wait(NULL);
+    }
+    return 0;
+}