Created algorithm to convert binary to octal. (#478)

* Created algorithm to convert binary to octal.

This contatin algorithm to convert binary to octal using recursion

* Rename decimal_to_octal_recursion to decimal_to_octal_recursion.c

conversions/decimal_to_octal_recursion.c

@@ -0,0 +1,28 @@
+//Program to convert decimal number to octal (Using Reccursion)
+//This program only works for integer decimals
+//Created by Aromal Anil
+
+#include <stdio.h>
+int decimal_to_octal(int decimal)
+{
+  if( (decimal<8) && (decimal>0) )
+  {
+    return decimal;
+  }
+  else if(decimal==0)
+  {
+    return 0;
+  }
+  else
+  {
+    return ( (decimal_to_octal(decimal/8)*10) + decimal%8 );
+  }
+}
+void main()
+{
+  int octalNumber,decimalNumber;
+  printf("\nEnter your decimal number : ");
+  scanf("%d",&decimalNumber);
+  octalNumber = decimal_to_octal(decimalNumber);
+  printf("\nThe octal of %d is : %d" ,decimalNumber,octalNumber);
+}