Driver code
a = "9555" ; NEW_LINE b = "555" ; NEW_LINE count = count_carry ( a , b ) ; NEW_LINE if ( count == 0 ) : NEW_LINE INDENT print ( "0" ) ; NEW_LINE DEDENT elif ( count == 1 ) : NEW_LINE INDENT print ( "1" ) ; NEW_LINE DEDENT else : NEW_LINE INDENT print ( count ) ; NEW_LINE DEDENT