Ajouter 'concurrence.c'

concurrence.c

@@ -0,0 +1,35 @@
+#include <unistd.h>
+#include <errno.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+
+
+int desc_read, desc_write;
+char c;
+
+int main(int argc, char *argv[]) {
+	
+	if (argc != 3) {
+		printf("Deux noms de fichiers comme arguments\n");
+		exit(1);
+	}
+	
+	if ((desc_read = open(argv[1], O_RDONLY)) == -1) {
+		perror(argv[1]);
+		exit(1);
+	}
+
+	if ((desc_write = open(argv[2], O_WRONLY|O_CREAT|O_TRUNC, 0666)) == -1) {
+			perror(argv[2]);
+			exit(1);
+	}
+	
+	for(;;) {
+		if (read(desc_read, &c, 1) != 1) exit(0);
+		write(desc_write, &c, 1);
+	}
+	close(desc_read);
+	close(desc_write);
+	return EXIT_SUCCESS;
+}