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21 - recorstion/ex4.c

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+#include "General.h"
+
+//---------------------------------------------------------------------------------------
+//                                DiffEvenSumToOddSum
+//                                -------------------
+//
+// General      : Checks the difference between the number of odd digits and the 
+//                odd number.
+//
+// Parameters   :  
+//          num - a number (int)
+//
+// Return value : The difference between the number of odd digits and the 
+//                odd number. (unsigned short).
+//
+//---------------------------------------------------------------------------------------
+// Programmer : Cohen Idan
+// Student No : 211675038
+// Date       : 30.12.2019
+//---------------------------------------------------------------------------------------
+short DiffEvenSumToOddSum(int num)
+{
+    int digit;
+    if (num < TEN)
+        return ((num % TWO) ? num : -num);
+    else
+    {
+        digit = num % TEN;
+        return (DiffEvenSumToOddSum(num / TEN) + ((digit % TWO) ? digit : -digit));
+    }
+}
+
+void main(void)
+{
+    printf("%hd\n", DiffEvenSumToOddSum(12345));
+}