solution/m3-002

projects/002-recursive-decimal-to-binary/python/main.py

@@ -0,0 +1,18 @@
+def dec_to_bin(number):
+    if number==0:
+        return '0'
+    elif number==1:
+        return '1'
+    else:
+        return dec_to_bin(number//2)+str(number%2)
+
+def main():
+    number=input('Please, enter the decimal number to be converted in binary system:')
+    while not number.isdigit():
+        number=input('Only decimal numebes:')
+    number=int(number)
+    binary_str=dec_to_bin(number)
+    print('The decimal number {} corresponds to {} in binary system.'.format(number,binary_str))
+
+if __name__=='__main__':
+    main()