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22- recorstion2/ex7.c

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+#include "General.h"
+#include <string.h>
+
+
+//---------------------------------------------------------------------------------------
+//                                StringMirror
+//                                ------------
+//
+// General      : Recursive function that receives a string and returns a mirror string 
+//                of its inverted string. ("ABCD" = "DCBAABCD")
+//
+// Parameters   :  
+//          str  - a pointer of string (char *)
+//
+// Return value : mirror string of its inverted string. (char *).
+//
+//---------------------------------------------------------------------------------------
+// Programmer : Cohen Idan
+// Student No : 211675038
+// Date       : 05.01.2019
+//---------------------------------------------------------------------------------------
+char * StringMirror(char * str)
+{
+    string temp;
+    unsigned int len;
+    if (!(*(str + ONE)))
+    {
+        return (strcat(str, str));
+    }
+    else
+    { 
+        temp[ZERO] = *str;  
+        strcpy(temp + ONE, str);
+        len = StringLength(str) - ONE;
+        return (strcpy(StringMirror(str + ONE) + len, temp) - len);
+    }
+}
+
+void main(void)
+{
+    string s1 = " nehoC nadI";
+    printf("%s\n", StringMirror(s1));
+}