A ima/2025-10-08/Musterpotenzmenge.cpp

@@ -0,0 +1,23 @@
+using namespace std;                   // import everything from 'std' into current
+#include <stdio.h>                     // Standard Input Output
+#include <string.h>
+int main (int argc, char* argv[]) {
+  const int cardinality = 10;          // cardinality of the set
+  const int elements = cardinality + 1;
+  int control[elements];               // control vector
+  char delimiter[3];                   // character string to be output between the data elements
+
+  for (int i = 0; i < elements; control[i++] = 0); // initialize control vector
+  while (control[0] == 0) {            // end of processing upon transfer to MSB
+    printf ("{");                      // beginning of the set elements
+    strcpy (delimiter, "");            // first elements without preceding characters
+    for (int i = 1; i <= cardinality; i++) // analyze control vector
+      if (control[i]) {                // Should the element be included in the result set?
+        printf ("%s%d", delimiter, i - 1);
+        strcpy (delimiter, ", ");
+      }
+    printf ("}\n");                    // end of set elements
+    for (int i = elements; control[--i]++; control[i] = 0); // one addition
+  }
+  return 0;
+}