added ws202425 courses

2024_Praxis_der_Programmierung/ue3/array_1.c

@@ -0,0 +1,47 @@
+/* array_1.c
+ *
+ * Adressierung von Array-Elementen
+ * Indizes vs. Pointer
+ */
+
+// ACHTUNG: Datei enthaelt zu beseitigende Fehler!!!
+
+#include <stdio.h>
+
+int main()
+{
+
+   int i;
+   int ar[4];
+   ar[0] = 10;
+   ar[1] = 20;
+   ar[2] = 30;
+   ar[3] = 40;
+
+   printf("\nar: %p \t &ar[0]: %p\n", ar, &ar[0]);
+
+// i) Array-Syntax
+   printf("\n\nElemente von ar, indiziert:\n");
+   for (int i = 0; i < sizeof(ar)/sizeof(int); i++){
+      printf("%d\t\n", ar[i]); 
+   }
+
+   printf("\n\nAdressen:\n");
+   for (int i = 0; i < sizeof(ar)/sizeof(int); i++){        
+      printf("%p\t\n", &ar[i]); 
+   }
+  
+// ii) Pointer-Syntax
+   printf("\n\nElemente von ar, referenziert:\n");
+   for (int i = 0; i < sizeof(ar)/sizeof(int); i++){         
+      printf("%d\t\n", *(ar + i));
+   }
+
+   printf("\n\nAdressen:\n");
+   for (int i = 0; i < sizeof(ar)/sizeof(int); i++){         
+      printf("%p\t", ar+i); 
+   }
+
+   printf("\n\n");
+   return 0;
+}