Beispiel-Programme und Tafelbild: Arrays und Pointer für Fortgeschrittene

20161020/arrays-1.c

+#include <stdio.h>
+
+int main (void)
+{
+  int hello[] = { 84, 101, 115, 116, 0 };
+  for (int i = 0; hello[i]; i++)
+    printf ("%d\n", hello[i]);
+  return 0;
+}

20161020/arrays-10.c

+#include <stdio.h>
+
+int main (void)
+{
+  char *a[] = { "Dies", "ist", "ein", "Test" };
+  char **p = a;
+
+  for (int i = 0; i < 4; i++)
+    printf ("%s\n", a[i]);
+  return 0;
+}

20161020/arrays-11.c

+#include <stdio.h>
+
+int main (void)
+{
+  char *a[] = { "Dies", "ist", "ein", "Test" };
+  char **p = a;
+
+  for (int i = 0; i < 4; i++)
+    printf ("%s\n", *p++);
+  return 0;
+}

20161020/arrays-12.c

+#include <stdio.h>
+
+int main (void)
+{
+  char *a[] = { "Dies", "ist", "ein", "Test" };
+
+  for (int i = 0; i < 4; i++)
+    {
+      for (int j = 0; a[i][j]; j++)
+        printf ("%c", a[i][j]);
+      printf ("\n");
+    }
+  return 0;
+}

20161020/arrays-13.c

+#include <stdio.h>
+
+int main (void)
+{
+  char a[][5] = { "Dies", "ist", "ein", "Test" };
+
+  for (int i = 0; i < 4; i++)
+    {
+      for (int j = 0; a[i][j]; j++)
+        printf ("%c", a[i][j]);
+      printf ("\n");
+    }
+  return 0;
+}

20161020/arrays-14.c

+#include <stdio.h>
+
+int main (void)
+{
+  char a[][] = { "Dies", "ist", "ein", "Test" };
+
+  for (int i = 0; i < 4; i++)
+    {
+      for (int j = 0; a[i][j]; j++)
+        printf ("%c", a[i][j]);
+      printf ("\n");
+    }
+  return 0;
+}

20161020/arrays-15.c

+#include <stdio.h>
+
+int main (void)
+{
+  char a[][5] = { "Dies", "ist", "ein", "Test" };
+  char **p = a;
+
+  for (int i = 0; i < 4; i++)
+    {
+      for (int j = 0; p[i][j]; j++)
+        printf ("%c", p[i][j]);
+      printf ("\n");
+    }
+  return 0;
+}

20161020/arrays-16.c

+#include <stdio.h>
+
+int main (void)
+{
+  char a[][5] = { "Dies", "ist", "ein", "Test" };
+  char *p = a[0];
+
+  for (int i = 0; i < 4; i++)
+    {
+      for (int j = 0; p[i][j]; j++)
+        printf ("%c", p[i][j]);
+      printf ("\n");
+    }
+  return 0;
+}

20161020/arrays-17.c

+#include <stdio.h>
+
+int main (void)
+{
+  char a[][5] = { "Dies", "ist", "ein", "Test" };
+  char *p = a[0];
+
+  for (int i = 0; i < 4; i++)
+    {
+      for (int j = 0; p[i]; j++)
+        printf ("%c", p[j]);
+      printf ("\n");
+    }
+  return 0;
+}

20161020/arrays-18.c

+#include <stdio.h>
+
+int main (void)
+{
+  char a[][5] = { "Dies", "ist", "ein", "Test" };
+  char *p = a[0];
+
+  for (int i = 0; i < 4; i++)
+    {
+      for (int j = 0; p[j]; j++)
+        printf ("%c", p[j]);
+      printf ("\n");
+    }
+  return 0;
+}

20161020/arrays-19.c

+#include <stdio.h>
+
+int main (void)
+{
+  char a[][5] = { "Dies", "ist", "ein", "Test" };
+  char *p;
+
+  for (int i = 0; i < 4; i++)
+    {
+      p = a[i];
+      for (int j = 0; p[j]; j++)
+        printf ("%c", p[j]);
+      printf ("\n");
+    }
+  return 0;
+}

20161020/arrays-2.c

+#include <stdio.h>
+
+int main (void)
+{
+  int hello[] = { 84, 101, 115, 116, 0 };
+  for (int i = 0; hello[i]; i++)
+    printf ("%c\n", hello[i]);
+  return 0;
+}

20161020/arrays-20.c

+#include <stdio.h>
+
+int main (void)
+{
+  char a[][5] = { "Dies", "ist", "ein", "Test" };
+  char *p = a[0];
+
+  for (int i = 0; i < 4; i++)
+    {
+      for (int j = 0; p[j]; j++)
+        printf ("%c", p[j]);
+      printf ("\n");
+      p++;
+    }
+  return 0;
+}

20161020/arrays-21.c

+#include <stdio.h>
+
+int main (void)
+{
+  char a[][5] = { "Dies", "ist", "ein", "Test" };
+  char *p = a[0];
+
+  for (int i = 0; i < 4; i++)
+    {
+      for (int j = 0; p[j]; j++)
+        printf ("%c", p[j]);
+      printf ("\n");
+      p += 5;
+    }
+  return 0;
+}

20161020/arrays-22.c

+#include <stdio.h>
+
+int main (void)
+{
+  typedef char string5[5];
+  string5 a[] = { "Dies", "ist", "ein", "Test" };
+  string5 *p = a;
+
+  for (int i = 0; i < 4; i++)
+    {
+      for (int j = 0; p[j]; j++)
+        printf ("%c", p[j]);
+      printf ("\n");
+      p++;
+    }
+  return 0;
+}

20161020/arrays-23.c

+#include <stdio.h>
+
+int main (void)
+{
+  typedef char string5[5];
+  string5 a[] = { "Dies", "ist", "ein", "Test" };
+  string5 *p = a;
+
+  for (int i = 0; i < 4; i++)
+    {
+      for (int j = 0; (*p)[j]; j++)
+        printf ("%c", (*p)[j]);
+      printf ("\n");
+      p++;
+    }
+  return 0;
+}

20161020/arrays-24.c

+#include <stdio.h>
+
+int main (void)
+{
+  typedef char string5[5];
+  string5 a[] = { "Dies", "ist", "ein", "Test" };
+  string5 *p = a;
+
+  for (int i = 0; i < 4; i++)
+    {
+      printf ("%s\n", (*p)[i]);
+      p++;
+    }
+  return 0;
+}

20161020/arrays-25.c

+#include <stdio.h>
+
+int main (void)
+{
+  typedef char string5[5];
+  string5 a[] = { "Dies", "ist", "ein", "Test" };
+  string5 *p = a;
+
+  for (int i = 0; i < 4; i++)
+    {
+      printf ("%s\n", &((*p)[i]));
+      p++;
+    }
+  return 0;
+}

20161020/arrays-26.c

+#include <stdio.h>
+
+int main (void)
+{
+  typedef char string5[5];
+  string5 a[] = { "Dies", "ist", "ein", "Test" };
+  string5 *p = a;
+
+  for (int i = 0; i < 5; i++)
+    {
+      printf ("%s\n", &((*p)[i]));
+      p++;
+    }
+  return 0;
+}

20161020/arrays-27.c

+#include <stdio.h>
+
+int main (void)
+{
+  typedef char string5[5];
+  string5 a[] = { "Dies", "ist", "ein", "Test" };
+  string5 *p = a;
+
+  for (int i = 0; i < 4; i++)
+    {
+      printf ("%s\n", &(*p));
+      p++;
+    }
+  return 0;
+}