[SP/P6] Solved exercises

1 files changed, 45 insertions, 0 deletions

diff --git a/Year 3/System programming/Practicum6/ex4.c b/Year 3/System programming/Practicum6/ex4.c
new file mode 100644
index 0000000..fe0718e
--- /dev/null
+++ b/Year 3/System programming/Practicum6/ex4.c
@@ -0,0 +1,45 @@
+#include <unistd.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+
+int main(int argc, char* argv[]) {
+	int fileDes[2];
+	if (pipe(fileDes) < 0) {
+		perror("pipe");
+		return 1;
+	}
+
+	int f = fork();
+	if (f == 0) { // child
+		if (close(fileDes[1]) < 0) {
+			perror("close");
+			return 2;
+		}
+
+		char buf[1024];
+		int count = argc - 1;
+		while (count > 0) {
+			read(fileDes[0], &buf, 1024);
+			if (buf[0] != '\0') {
+				printf("%s", buf);
+				count--;
+			}
+		}
+	}
+	else {
+		if (close(fileDes[0]) < 0) {
+			perror("close");
+			return 3;
+		}
+
+		for (size_t i = 1; i < argc; i++) {
+			write(fileDes[1], argv[i], strlen(argv[i]));
+			sleep(1);
+		}
+		int status;
+		wait(&status);
+	}
+	return 0;
+}