[SP/P04] Solved exercises

1 files changed, 22 insertions, 0 deletions

diff --git a/Year 3/System programming/Practice04/ex4.c b/Year 3/System programming/Practice04/ex4.c
new file mode 100644
index 0000000..1014f5c
--- /dev/null
+++ b/Year 3/System programming/Practice04/ex4.c
@@ -0,0 +1,22 @@
+#include <unistd.h> // fork, execlp
+#include <sys/types.h> // pid_t
+#include <sys/wait.h> // wait
+#include <stdio.h> // printf
+
+int main(int argc, char* argv[]) {
+	pid_t fork1 = fork();
+	pid_t fork2 = fork();
+	if (fork1 == 0) { // in child 1
+		execlp(argv[1], argv[1], (char*)NULL);
+	}
+	else if (fork2 == 0) { // in child 2
+		execlp(argv[2], argv[2], (char*)NULL);
+	}
+	else {
+		int firstStatus, secondStatus;
+		pid_t firstPID = wait(&firstStatus);
+		pid_t secondPID = wait(&secondStatus);
+		printf("%s %d\n", argv[1 + (firstPID != fork1)], firstStatus);
+		printf("%s %d\n", argv[1 + (secondPID != fork1)], secondStatus);
+	}
+}