added ws202425 courses

2024-11-14 13:11:04 +01:00
parent 800282c2e8
commit beb31897b1
461 changed files with 20368 additions and 0 deletions
@@ -0,0 +1,38 @@
+#include <stdlib.h>
+#include <fcntl.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <stdio.h>
+
+#define SIZE 512
+
+int main() {
+
+  int fd = open("./test.txt", O_RDWR); 
+  if (fd == -1){
+    perror("could not open file");
+    return EXIT_FAILURE;
+  }
+
+  char * buffer = (char *) calloc(SIZE, sizeof(char)); 
+
+  if (buffer == NULL) {
+    perror("could not allocate buffer");
+    close(fd);
+    return EXIT_FAILURE;
+  }
+
+  ssize_t r = read(fd, buffer, SIZE-1); 
+  if (r == -1) {
+    perror("could not read file");
+    free(buffer);
+    close(fd);
+    return EXIT_FAILURE;
+  }
+  return 0;
+
+  printf("%.*s", SIZE-1, buffer);
+  free(buffer);
+  close(fd);
+  return EXIT_SUCCESS;
+}