Add string example.

01_strings/string.c

@@ -0,0 +1,31 @@
+#include <stdio.h>
+#include <string.h>
+
+#define MAX_STR_LEN 10
+
+void gibAus(char string[])
+{
+    char puffer[MAX_STR_LEN];
+    printf("%s: %d\n", string, (int)strlen(string));
+    strncpy(puffer, string, MAX_STR_LEN);
+    puffer[MAX_STR_LEN-1] = '\0';
+
+    printf("%s\n", puffer);
+}
+
+int main()
+{
+    char string1[] = "Hallo";
+    char *string2 = "Hallo2";
+
+    printf("%s\n", string2);
+
+    string2 = string1;
+    string2[2] = '\0';
+
+    printf("%d\n", (int)sizeof(string1));
+
+    gibAus(string1);
+
+    return 0;
+}