Beispielprogramme 5.11.2018

20181105/ascii-1.c

+#include <stdio.h>
+
+int main (void)
+{
+  char a = 0;
+  printf ("%d\n", a);
+  printf ("%c\n", a);
+  a = 72;
+  printf ("%d\n", a);
+  printf ("%c\n", a);
+  a = 'a';
+  printf ("%d\n", a);
+  printf ("%c\n", a);
+  return 0;
+}

20181105/ascii-2.c

+#include <stdio.h>
+
+int main (void)
+{
+  int a = 0;
+  printf ("%d\n", a);
+  printf ("%c\n", a);
+  a = 72;
+  printf ("%d\n", a);
+  printf ("%c\n", a);
+  a = 'a';
+  printf ("%d\n", a);
+  printf ("%c\n", a);
+  return 0;
+}

20181105/string-ops-1.c

+#include <stdio.h>
+#include <string.h>
+
+int main (void)
+{
+  char hello[] = "Hello, world!\n";
+
+  printf ("%s\n", hello);
+  printf ("%zd\n", strlen (hello));
+
+  printf ("%s\n", hello + 7);
+  printf ("%zd\n", strlen (hello + 7));
+
+  hello[5] = 0;
+  printf ("%s\n", hello);
+  printf ("%zd\n", strlen (hello));
+
+  return 0;
+}

20181105/string-ops-10.c

+#include <stdio.h>
+#include <string.h>
+
+int main (void)
+{
+  char *anton = "Zachaeus";
+  char *zacharias = "Zacharias";
+
+  printf ("%d\n", strcmp (anton, zacharias));
+  printf ("%d\n", strcmp (zacharias, anton));
+  printf ("%d\n", strcmp (anton, anton));
+
+  return 0;
+
+  char buffer[100] = "Huber ";
+  strcat (buffer, anton);
+  printf ("%s\n", buffer);
+
+  return 0;
+}

20181105/string-ops-2.c

+#include <stdio.h>
+#include <string.h>
+
+int main (void)
+{
+  char *hello = "Hello, world!\n";
+
+  printf ("%s\n", hello);
+  printf ("%zd\n", strlen (hello));
+
+  printf ("%s\n", hello + 7);
+  printf ("%zd\n", strlen (hello + 7));
+
+  hello[5] = 0;
+  printf ("%s\n", hello);
+  printf ("%zd\n", strlen (hello));
+
+  return 0;
+}

20181105/string-ops-3.c

+#include <stdio.h>
+#include <string.h>
+
+int main (void)
+{
+  char hello_buffer[] = "Hello, world!\n";
+  char *hello = hello_buffer;
+
+  printf ("%s\n", hello);
+  printf ("%zd\n", strlen (hello));
+
+  printf ("%s\n", hello + 7);
+  printf ("%zd\n", strlen (hello + 7));
+
+  hello[5] = 0;
+  printf ("%s\n", hello);
+  printf ("%zd\n", strlen (hello));
+
+  return 0;
+}

20181105/string-ops-4.c

+#include <stdio.h>
+#include <string.h>
+
+int main (void)
+{
+  char *test1 = "Dies ist ein Test.";
+  char *test2 = "Dies ist ein Test.";
+  if (test1 == test2)
+    printf ("Die Strings sind gleich.\n");
+  else
+    printf ("Die Strings sind verschieden.\n");
+  return 0;
+}

20181105/string-ops-5.c

+#include <stdio.h>
+#include <string.h>
+
+int main (void)
+{
+  char test1[] = "Dies ist ein Test.";
+  char test2[] = "Dies ist ein Test.";
+  if (test1 == test2)
+    printf ("Die Strings sind gleich.\n");
+  else
+    printf ("Die Strings sind verschieden.\n");
+  return 0;
+}

20181105/string-ops-6.c

+#include <stdio.h>
+#include <string.h>
+
+int main (void)
+{
+  char test1[] = "Dies ist ein Test.";
+  char test2[] = "Dies ist ein Test.";
+  if (strcmp (test1, test2) == 0)
+    printf ("Die Strings sind gleich.\n");
+  else
+    printf ("Die Strings sind verschieden.\n");
+  return 0;
+}

20181105/string-ops-7.c

+#include <stdio.h>
+#include <string.h>
+
+int main (void)
+{
+  char test1[] = "Dies ist ein Test.";
+  char test2[] = "Dies ist ein Test.";
+  if (!strcmp (test1, test2))
+    printf ("Die Strings sind gleich.\n");
+  else
+    printf ("Die Strings sind verschieden.\n");
+  return 0;
+}

20181105/string-ops-8.c

+#include <stdio.h>
+#include <string.h>
+
+int main (void)
+{
+  char *anton = "Anton";
+  char *zacharias = "Zacharias";
+
+  printf ("%d\n", strcmp (anton, zacharias));
+  printf ("%d\n", strcmp (zacharias, anton));
+  printf ("%d\n", strcmp (anton, anton));
+
+  return 0;
+
+  char buffer[100] = "Huber ";
+  strcat (buffer, anton);
+  printf ("%s\n", buffer);
+
+  return 0;
+}

20181105/string-ops-9.c

+#include <stdio.h>
+#include <string.h>
+
+int main (void)
+{
+  char *anton = "anton";
+  char *zacharias = "Zacharias";
+
+  printf ("%d\n", strcmp (anton, zacharias));
+  printf ("%d\n", strcmp (zacharias, anton));
+  printf ("%d\n", strcmp (anton, anton));
+
+  return 0;
+
+  char buffer[100] = "Huber ";
+  strcat (buffer, anton);
+  printf ("%s\n", buffer);
+
+  return 0;
+}